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Document and Entity Information - shares	3 Months Ended
Apr. 03, 2016	Apr. 27, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 03, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Trading Symbol	BGFV
Entity Registrant Name	BIG 5 SPORTING GOODS CORP
Entity Central Index Key	0001156388
Current Fiscal Year End Date	--01-01
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		22,023,070

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 03, 2016	Jan. 03, 2016
Current assets:
Cash	$ 6,446	$ 7,119
Accounts receivable, net of allowances of $53 and $61, respectively	12,271	14,180
Merchandise inventories, net	286,431	299,446
Prepaid expenses	12,924	12,185
Total current assets	318,072	332,930
Property and equipment, net	80,765	82,036
Deferred income taxes	20,839	23,402
Other assets, net of accumulated amortization of $1,288 and $1,244, respectively	2,304	2,228
Goodwill	4,433	4,433
Total assets	426,413	445,029
Current liabilities:
Accounts payable	85,475	89,961
Accrued expenses	58,649	69,524
Current portion of capital lease obligations	1,342	1,435
Total current liabilities	145,466	160,920
Deferred rent, less current portion	18,815	19,516
Capital lease obligations, less current portion	2,095	2,392
Long-term debt	56,569	54,846
Other long-term liabilities	8,721	8,524
Total liabilities	231,666	246,198
Commitments and contingencies
Stockholders’ equity:
Common stock, 0.01 par value, authorized 50,000,000 shares; issued 24,671,787 and 24,562,799 shares, respectively; outstanding 22,023,070 and 21,917,982 shares, respectively	247	246
Additional paid-in capital	112,046	112,236
Retained earnings	115,140	118,998
Less: Treasury stock, at cost; 2,648,717 and 2,644,817 shares, respectively	(32,686)	(32,649)
Total stockholders’ equity	194,747	198,831
Total liabilities and stockholders’ equity	$ 426,413	$ 445,029

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 03, 2016	Jan. 03, 2016
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable, current	$ 53	$ 61
Accumulated amortization on other assets	$ 1,288	$ 1,244
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	24,671,787	24,562,799
Common stock, shares outstanding	22,023,070	21,917,982
Treasury stock, shares	2,648,717	2,644,817

Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Income Statement [Abstract]
Net sales	$ 234,528	$ 243,555
Cost of sales	163,563	166,871
Gross profit	70,965	76,684
Selling and administrative expense	71,219	72,462
Operating (loss) income	(254)	4,222
Interest expense	452	403
(Loss) income before income taxes	(706)	3,819
Income taxes	413	1,505
Net (loss) income	$ (1,119)	$ 2,314
Earnings per share:
Basic	$ (0.05)	$ 0.11
Diluted	(0.05)	0.11
Dividends per share	$ 0.125	$ 0.10
Weighted-average shares of common stock outstanding:
Basic	21,583	21,809
Diluted	21,583	21,999

Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock, At Cost [Member]
Beginning Balance at Dec. 28, 2014	$ 195,004		$ 245	$ 110,707	$ 112,521	$ (28,469)
Beginning Balance, Shares at Dec. 28, 2014		22,180,458
Net (loss) income	2,314				2,314
Dividends on common stock	(2,210)				(2,210)
Issuance of nonvested share awards			$ 1	(1)
Issuance of nonvested share awards, Shares			147,940
Exercise of share option awards	16			16
Exercise of share option awards, Shares			2,700
Share-based compensation	508			508
Tax benefit (deficiency) from share-based awards activity	75			75
Forfeiture of nonvested share awards, Shares			(1,520)
Retirement of common stock for payment of withholding tax	(685)		$ (1)	(684)
Retirement of common stock for payment of withholding tax, Shares			(52,621)
Purchases of treasury stock	(942)					(942)
Purchases of treasury stock, Shares			(76,073)
Ending Balance at Mar. 29, 2015	194,080		$ 245	110,621	112,625	(29,411)
Ending Balance, shares at Mar. 29, 2015		22,200,884
Beginning Balance at Jan. 03, 2016	198,831		246	112,236	118,998	(32,649)
Beginning Balance, Shares at Jan. 03, 2016		21,917,982
Net (loss) income	(1,119)				(1,119)
Dividends on common stock	(2,739)				(2,739)
Issuance of nonvested share awards			$ 2	(2)
Issuance of nonvested share awards, Shares			162,780
Exercise of share option awards	7			7
Exercise of share option awards, Shares			1,075
Share-based compensation	639			639
Tax benefit (deficiency) from share-based awards activity	(222)			(222)
Forfeiture of nonvested share awards, Shares			(1,185)
Retirement of common stock for payment of withholding tax	$ (613)		$ (1)	(612)
Retirement of common stock for payment of withholding tax, Shares	(53,682)		(53,682)
Purchases of treasury stock	$ (37)					(37)
Purchases of treasury stock, Shares			(3,900)
Ending Balance at Apr. 03, 2016	$ 194,747		$ 247	$ 112,046	$ 115,140	$ (32,686)
Ending Balance, shares at Apr. 03, 2016		22,023,070

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Cash flows from operating activities:
Net (loss) income	$ (1,119)	$ 2,314
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	4,686	5,426
Share-based compensation	639	508
Excess tax benefit related to share-based awards	(51)	(87)
Amortization of debt issuance costs	43	44
Deferred income taxes	2,563	112
Changes in operating assets and liabilities:
Accounts receivable, net	1,909	4,893
Merchandise inventories, net	13,015	5,005
Prepaid expenses and other assets	(1,080)	993
Accounts payable	38	8,420
Accrued expenses and other long-term liabilities	(11,001)	(8,119)
Net cash provided by operating activities	9,642	19,509
Cash flows from investing activities:
Purchases of property and equipment	(3,162)	(7,004)
Net cash used in investing activities	(3,162)	(7,004)
Cash flows from financing activities:
Principal borrowings under revolving credit facility	57,655	37,999
Principal payments under revolving credit facility	(55,932)	(48,899)
Changes in book overdraft	(5,106)	(2,650)
Principal payments under capital lease obligations	(354)	(339)
Proceeds from exercise of share option awards	7	16
Excess tax benefit related to share-based awards	51	87
Purchases of treasury stock	(37)	(942)
Tax withholding payments for share-based compensation	(613)	(685)
Dividends paid	(2,824)	(2,296)
Net cash used in financing activities	(7,153)	(17,709)
Net decrease in cash	(673)	(5,204)
Cash at beginning of period	7,119	11,503
Cash at end of period	6,446	6,299
Supplemental disclosures of non-cash investing and financing activities:
Property and equipment acquired under capital leases		139
Property and equipment additions unpaid	2,038	3,012
Supplemental disclosures of cash flow information:
Interest paid	445	395
Income taxes paid	$ 422	$ 314

Summary of Significant Accounting Policies

3 Months Ended

Apr. 03, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

(2)	Summary of Significant Accounting Policies

Consolidation

The accompanying Interim Financial Statements include the accounts of Big 5 Sporting Goods Corporation, Big 5 Corp. and Big 5 Services Corp. Intercompany balances and transactions have been eliminated in consolidation.

Reporting Period

The Company follows the concept of a 52-53 week fiscal year, which ends on the Sunday nearest December 31. Fiscal year 2016 is comprised of 52 weeks and ends on January 1, 2017. Fiscal year 2015 was comprised of 53 weeks and ended on January 3, 2016. The four quarters of fiscal 2016 are each comprised of 13 weeks. The first three quarters in fiscal 2015 were each comprised of 13 weeks, and the fourth quarter of fiscal 2015 was comprised of 14 weeks.

Recently Adopted Accounting Updates

In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This ASU requires retrospective adoption and is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. In August 2015, the FASB issued ASU No. 2015-15, Interest—Imputation of Interest (Subtopic 835-30) – Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements—Amendments to SEC Paragraphs Pursuant to Staff Announcement at June 18, 2015 EITF Meeting, which amends Subtopic 835-30 to allow an entity to defer and present debt issuance costs associated with line-of-credit arrangements as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether or not there are any outstanding borrowings on the line-of-credit arrangement. The effective date of ASU No. 2015-03 was unaffected by the issuance of ASU No. 2015-15. The adoption of ASU No. 2015-03 and ASU No. 2015-15 had no impact on the Company’s consolidated financial statements as the Company continues to classify debt issuance costs related to its line-of-credit arrangement in other assets.

In April 2015, the FASB issued ASU No. 2015-05, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which provides guidance to customers about whether a cloud computing arrangement includes a software license. If an arrangement includes a software license, the customer should account for the fees related to the software license element in a manner consistent with licenses of other intangible assets. If the arrangement does not include a license, the arrangement will be accounted for as a service contract. This ASU permits either retrospective or prospective adoption and is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The Company adopted ASU No. 2015-05 prospectively, and such adoption did not have a material impact on the Company’s consolidated financial statements.

In July 2015, the FASB issued ASU No. 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory, which requires all inventory, other than inventory measured at last-in, first-out (“LIFO”) or the retail inventory method, to be measured at the lower of cost and net realizable value. Net realizable value represents the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This ASU is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The amendments in this ASU should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company elected to early-adopt ASU No. 2015-11 during the first quarter of fiscal 2016, and such early adoption did not have a material impact on the Company’s consolidated financial statements.

In November 2015, the FASB issued ASU No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes, which requires that deferred tax liabilities and assets be classified as noncurrent in a classified balance sheet. Prior to the issuance of this guidance, deferred tax liabilities and assets were required to be separately classified into a current amount and a noncurrent amount in the balance sheet. The new accounting guidance represents a change in accounting principle and the standard is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years, with earlier application permitted as of the beginning of an interim or annual reporting period. The Company elected to early-adopt ASU No. 2015-17 during the first quarter of fiscal 2016 and retrospectively apply the presentation. Accordingly, deferred tax assets in the amount of $11.1 million, which were previously classified as current assets as of January 3, 2016, were reclassified to non-current deferred income tax assets on the Company's consolidated balance sheet to conform to current year presentation.

Recently Issued Accounting Updates

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which includes amendments that create Topic 606 and supersede the revenue recognition requirements in Topic 605, Revenue Recognition, including most industry-specific revenue recognition guidance throughout the Industry Topics of the Codification. In addition, the amendments supersede the cost guidance in Subtopic 605-35, Revenue Recognition—Construction-Type and Production-Type Contracts, and create new Subtopic 340-40, Other Assets and Deferred Costs—Contracts with Customers. In summary, the core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in ASU No. 2014-09 were originally effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application was not permitted. On July 9, 2015, the FASB decided to defer for one year the effective date of ASU No. 2014-09, while also deciding to permit early application. With these changes, ASU No. 2014-09 will become effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2017, with early application permitted as of the original effective date in ASU No. 2014-09 (i.e., annual reporting periods beginning after December 15, 2016). The Company is evaluating the future impact of this ASU, including the deferral decisions reached by the FASB, on the consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires lessees to recognize on the balance sheet assets and liabilities for leases with lease terms of more than 12 months. Consistent with current accounting principles generally accepted in the United States of America (“GAAP”), the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee will depend primarily on its classification as a finance or operating lease. However, unlike current GAAP—which requires only capital leases to be recognized on the balance sheet—the new ASU will require both types of leases to be recognized on the balance sheet. The ASU will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. This ASU shall be applied at the beginning of the earliest period presented using the modified retrospective approach, which includes a number of practical expedients that an entity may elect to apply. Early application of ASU No. 2016-02 is permitted. The Company is evaluating the future impact of this ASU on the consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which includes multiple provisions intended to simplify various aspects of the accounting for share-based payments, including treatment of excess tax benefits and forfeitures, as well as consideration of minimum statutory tax withholding requirements. The ASU will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016, with early application permitted in any interim or annual period. The Company is evaluating the future impact of this ASU on the consolidated financial statements.

Other relevant recently issued accounting updates are not expected to have a material impact on the Company’s consolidated financial statements.

Use of Estimates

Management has made a number of estimates and assumptions relating to the reporting of assets, liabilities and stockholders’ equity and the disclosure of contingent assets and liabilities as of the date of the Interim Financial Statements and reported amounts of revenue and expense during the reporting period to prepare these Interim Financial Statements in conformity with GAAP. Certain items subject to such estimates and assumptions include the carrying amount of merchandise inventories, property and equipment, and goodwill; valuation allowances for receivables, sales returns and deferred income tax assets; estimates related to gift card breakage and the valuation of share-based compensation awards; and obligations related to asset retirements, litigation, self-insurance liabilities and employee benefits. Actual results could differ significantly from these estimates under different assumptions and conditions.

Revenue Recognition

The Company recognizes revenue from retail sales at the point of sale through its retail stores. For e-commerce sales, revenue is recognized when the merchandise is delivered to the customer. Shipping and handling fees, when billed to customers for e-commerce sales, are included in net sales. An allowance for sales returns is estimated based upon historical experience and recorded as a reduction in sales in the relevant period.

Cash received from the sale of gift cards is recorded as a liability, and revenue is recognized upon the redemption of the gift card or when it is determined that the likelihood of redemption is remote (“gift card breakage”) and no liability to relevant jurisdictions exists. The Company determines the gift card breakage rate based upon historical redemption patterns and recognizes gift card breakage on a straight-line basis over the estimated gift card redemption period (20 quarters as of the end of the first quarter of fiscal 2016). The Company recognized approximately $112,000 and $111,000 in gift card breakage revenue for the first quarter of fiscal 2016 and 2015, respectively. The Company had outstanding gift card liabilities of $4.2 million and $4.9 million as of April 3, 2016 and January 3, 2016, respectively, which are included in accrued expenses.

The Company records sales tax collected from its customers on a net basis, and therefore excludes it from revenue as defined in Accounting Standards Codification (“ASC”) 605, Revenue Recognition.

Share-Based Compensation

The Company accounts for share-based compensation in accordance with ASC 718, Compensation—Stock Compensation. The Company recognizes compensation expense on a straight-line basis over the requisite service period using the fair-value method for share option awards, nonvested share awards and nonvested share unit awards granted with service-only conditions. See Note 9 to the Interim Financial Statements for a further discussion on share-based compensation.

Valuation of Merchandise Inventories, Net

The Company’s merchandise inventories are made up of finished goods and are valued at the lower of cost or net realizable value using the weighted-average cost method that approximates the first-in, first-out (“FIFO”) method. Average cost includes the direct purchase price of merchandise inventory, net of certain vendor allowances and cash discounts, in-bound freight-related expense and allocated overhead expense associated with the Company’s distribution center.

Management regularly reviews inventories and records valuation reserves for damaged and defective merchandise, merchandise items with slow-moving or obsolescence exposure and merchandise that has a carrying value that exceeds net realizable value. Because of its merchandise mix, the Company has not historically experienced significant occurrences of obsolescence.

Inventory shrinkage is accrued as a percentage of merchandise sales based on historical inventory shrinkage trends. The Company performs physical inventories of its stores at least once per year and cycle counts inventories at its distribution center throughout the year. The reserve for inventory shrinkage primarily represents an estimate for inventory shrinkage for each store since the last physical inventory date through the reporting date.

These reserves are estimates, which could vary significantly, either favorably or unfavorably, from actual results if future economic conditions, consumer demand and competitive environments differ from expectations.

Valuation of Long-Lived Assets

The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.

Long-lived assets are reviewed for recoverability at the lowest level in which there are identifiable cash flows (“asset group”), usually at the store level. Each store typically requires net investments of approximately $0.5 million in long-lived assets to be held and used, subject to recoverability testing. The carrying amount of an asset group is not considered recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. If the asset group is determined not to be recoverable, then an impairment charge will be recognized in the amount by which the carrying amount of the asset group exceeds its fair value, determined using discounted cash flow valuation techniques, as defined in ASC 360, Property, Plant, and Equipment.

The Company determines the sum of the undiscounted cash flows expected to result from the asset group by projecting future revenue, gross margin and operating expense for each store under evaluation for impairment. The estimates of future cash flows involve management judgment and are based upon assumptions about expected future operating performance. Assumptions used in these forecasts are consistent with internal planning, and include assumptions about sales growth rates, gross margins and operating expense in relation to the current economic environment and future expectations, competitive factors in various markets and inflation. The actual cash flows could differ from management’s estimates due to changes in business conditions, operating performance and economic conditions.

Leases and Deferred Rent

The Company accounts for its leases under the provisions of ASC 840, Leases.

The Company evaluates and classifies its leases as either operating or capital leases for financial reporting purposes. Operating lease commitments consist principally of leases for the Company’s retail store facilities, distribution center, corporate office, information technology hardware and distribution center delivery tractors. Capital lease obligations consist principally of leases for some of the Company’s information technology hardware.

Certain of the leases for the Company’s retail store facilities provide for payments based on future sales volumes at the leased location, which are not measurable at the inception of the lease. These contingent rents are expensed as they accrue.

Deferred rent represents the difference between rent paid and the amounts expensed for operating leases. Certain leases have scheduled rent increases, and certain leases include an initial period of free or reduced rent as an inducement to enter into the lease agreement (“rent holidays”). The Company recognizes rent expense for rent increases and rent holidays on a straight-line basis over the term of the underlying leases, without regard to when rent payments are made. The calculation of straight-line rent is based on the “reasonably assured” lease term as defined in ASC 840 and may exceed the initial non-cancelable lease term.

Landlord allowances for tenant improvements, or lease incentives, are recorded as deferred rent and amortized on a straight-line basis over the “reasonably assured” lease term as a component of rent expense.

Long-Term Debt

3 Months Ended

Apr. 03, 2016

Debt Disclosure [Abstract]

Long-Term Debt

(5)	Long-Term Debt

On October 18, 2010, the Company entered into a credit agreement with Wells Fargo Bank, National Association (“Wells Fargo”), as administrative agent, and a syndicate of other lenders, which was amended on October 31, 2011 and December 19, 2013 (as so amended, the “Credit Agreement”). The maturity date of the Credit Agreement is December 19, 2018.

The Credit Agreement provides for a revolving credit facility (the “Credit Facility”) with an aggregate committed availability of up to $140.0 million, which amount may be increased at the Company’s option up to a maximum of $165.0 million. The Company may also request additional increases in aggregate availability, up to a maximum of $200.0 million, in which case the existing lenders under the Credit Agreement will have the option to increase their commitments to accommodate the requested increase. If such existing lenders do not exercise that option, the Company may (with the consent of Wells Fargo, not to be unreasonably withheld) seek other lenders willing to provide such commitments. The Credit Facility includes a $50.0 million sublimit for issuances of letters of credit and a $20.0 million sublimit for swingline loans.

The Company may borrow under the Credit Facility from time to time, provided the amounts outstanding will not exceed the lesser of the then aggregate availability (as discussed above) and the Borrowing Base (such lesser amount being referred to as the “Loan Cap”). The “Borrowing Base” generally is comprised of the sum, at the time of calculation, of (a) 90.00% of eligible credit card receivables; plus (b) the cost of eligible inventory (other than eligible in-transit inventory), net of inventory reserves, multiplied by 90.00% of the appraised net orderly liquidation value of eligible inventory (expressed as a percentage of the cost of eligible inventory); plus (c) the lesser of (i) the cost of eligible in-transit inventory, net of inventory reserves, multiplied by 90.00% of the appraised net orderly liquidation value of eligible in-transit inventory (expressed as a percentage of the cost of eligible in-transit inventory), or (ii) $10.0 million, minus (d) certain reserves established by Wells Fargo in its role as the Administrative Agent in its reasonable discretion.

Generally, the Company may designate specific borrowings under the Credit Facility as either base rate loans or LIBO rate loans. The applicable interest rate on the Company’s borrowings is a function of the daily average, over the preceding fiscal quarter, of the excess of the Loan Cap over amounts borrowed (such amount being referred to as the “Average Daily Excess Availability”). Those loans designated as LIBO rate loans bear interest at a rate equal to the then applicable LIBO rate plus an applicable margin as shown in the table below. Those loans designated as base rate loans bear interest at a rate equal to the applicable margin for base rate loans (as shown below) plus the highest of (a) the Federal funds rate, as in effect from time to time, plus one-half of one percent (0.50%), (b) the LIBO rate, as adjusted to account for statutory reserves, plus one percent (1.00%), or (c) the rate of interest in effect for such day as publicly announced from time to time by Wells Fargo as its “prime rate.” The applicable margin for all loans is as set forth below as a function of Average Daily Excess Availability for the preceding fiscal quarter.

Level	Average Daily Excess Availability	LIBO Rate Applicable Margin		Base Rate Applicable Margin
I	Greater than or equal to $100,000,000		1.25%		0.25%
II	Less than $100,000,000 but greater than or equal to $40,000,000		1.50%		0.50%
III	Less than $40,000,000		1.75%		0.75%

The commitment fee assessed on the unused portion of the Credit Facility is 0.25% per annum.

Obligations under the Credit Facility are secured by a general lien and perfected security interest in substantially all of the Company’s assets. The Credit Agreement contains covenants that require the Company to maintain a fixed charge coverage ratio of not less than 1.0:1.0 in certain circumstances, and limit the ability to, among other things, incur liens, incur additional indebtedness, transfer or dispose of assets, change the nature of the business, guarantee obligations, pay dividends or make other distributions or repurchase stock, and make advances, loans or investments. The Company may declare or pay cash dividends or repurchase stock only if, among other things, no default or event of default then exists or would arise from such dividend or repurchase of stock and, after giving effect to such dividend or repurchase, certain availability and/or fixed charge coverage ratio requirements are satisfied. The Credit Agreement contains customary events of default, including, without limitation, failure to pay when due principal amounts with respect to the Credit Facility, failure to pay any interest or other amounts under the Credit Facility for five days after becoming due, failure to comply with certain agreements or covenants contained in the Credit Agreement, failure to satisfy certain judgments against the Company, failure to pay when due (or any other default which does or may lead to the acceleration of) certain other material indebtedness in principal amount in excess of $5.0 million, and certain insolvency and bankruptcy events.

As of April 3, 2016, the Company had long-term revolving credit borrowings of $56.6 million and letter of credit commitments of $0.5 million outstanding, compared with borrowings of $54.8 million and letter of credit commitments of $0.5 million as of January 3, 2016, respectively. Total remaining borrowing availability, after subtracting letters of credit, was $82.9 million and $84.7 million as of April 3, 2016 and January 3, 2016, respectively.

Earnings Per Share

3 Months Ended

Apr. 03, 2016

Earnings Per Share [Abstract]

Earnings Per Share

(7)	Earnings Per Share

The Company calculates earnings per share in accordance with ASC 260, Earnings Per Share, which requires a dual presentation of basic and diluted earnings per share. Basic earnings per share is calculated by dividing net income by the weighted-average shares of common stock outstanding, reduced by shares repurchased and held in treasury, during the period. Diluted earnings per share represents basic earnings per share adjusted to include the dilutive effect of outstanding share option awards, nonvested share awards and nonvested share unit awards.

The following table sets forth the computation of basic and diluted earnings per common share:

	13 Weeks Ended
	April 3, 2016			March 29, 2015
	(In thousands, except per share data)
Net (loss) income	$	(1,119	)	$	2,314
Weighted-average shares of common stock outstanding:
Basic		21,583			21,809
Dilutive effect of common stock equivalents arising from share option, nonvested share and nonvested share unit awards		—			190
Diluted		21,583			21,999
Basic earnings per share	$	(0.05	)	$	0.11
Diluted earnings per share	$	(0.05	)	$	0.11

The computation of diluted earnings per share for the first quarter of fiscal 2016 excludes all potential share option awards in the amount of 454,571 since the Company reported a net loss, and the effect of their inclusion would have been antidilutive (i.e., including such share option awards would result in higher earnings per share). The computation of diluted earnings per share for the first quarter of fiscal 2015 excludes share option awards in the amount of 487,169 that were outstanding and antidilutive, since the exercise prices of these share option awards exceeded the average market price of the Company’s common shares.

Additionally, the computation of diluted earnings per share for the first quarter of fiscal 2016 excludes all potential nonvested share awards and nonvested share unit awards in the amount of 117,067 shares since the Company reported a net loss, and the effect of their inclusion would have been antidilutive. The computation of diluted earnings per share for the first quarter of fiscal 2015 excludes nonvested share awards and nonvested share unit awards in the amount of 791 shares that were outstanding and antidilutive, since the grant date fair values of these nonvested share awards and nonvested share unit awards exceeded the average market price of the Company’s common shares.

Share-based Compensation

3 Months Ended

Apr. 03, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-based Compensation

(9)	Share-based Compensation

At its discretion, the Company grants share option awards, nonvested share awards and nonvested share unit awards to certain employees, as defined by ASC 718, Compensation—Stock Compensation, under the Company’s 2007 Equity and Performance Incentive Plan, as amended and restated on June 14, 2011 (the “Plan”), and accounts for its share-based compensation in accordance with ASC 718. The Company recognized $0.6 million and $0.5 million in share-based compensation expense for the first quarter of fiscal 2016 and 2015, respectively.

Share Option Awards

Share option awards granted by the Company generally vest and become exercisable in four equal annual installments of 25% per year with a maximum life of ten years. The exercise price of share option awards is equal to the quoted market price of the Company’s common stock on the date of grant. No share option awards were granted in the first quarter of fiscal 2016 and 2015.

As of April 3, 2016, there was $0.2 million of total unrecognized compensation expense related to nonvested share option awards granted. That expense is expected to be recognized over a weighted-average period of 2.2 years.

Nonvested Share Awards and Nonvested Share Unit Awards

Nonvested share awards and nonvested share unit awards granted by the Company have historically vested from the date of grant in four equal annual installments of 25% per year. In accordance with the Company’s Director Compensation Program, as amended on July 24, 2014, nonvested share awards and nonvested share unit awards granted by the Company to non-employee directors vest 100% on the first anniversary of the grant date. This one-year vesting for non-employee directors became effective for nonvested share awards and nonvested share unit awards granted in fiscal 2015.

Nonvested share awards are delivered to the recipient upon their vesting. With respect to nonvested share unit awards, vested shares will be delivered to the recipient on the tenth business day of January following the year in which the recipient’s service to the Company is terminated. The total fair value of nonvested share awards which vested during the first quarter of fiscal 2016 and 2015 was $1.5 million and $1.7 million, respectively. No nonvested share unit awards vested during the first quarter of fiscal 2016 and 2015.

The Company granted 162,780 and 147,940 nonvested share awards in the first quarter of fiscal 2016 and 2015, respectively. The weighted-average grant-date fair value per share of the Company’s nonvested share awards granted in the first quarter of fiscal 2016 and 2015 was $11.41 and $13.01, respectively. In the first quarter of fiscal 2016 and 2015, the Company granted no nonvested share unit awards.

The following table details the Company’s nonvested share awards activity for the 13 weeks ended April 3, 2016:

	Shares			Weighted- Average Grant-Date Fair Value
Balance as of January 3, 2016		348,490		$	13.63
Granted		162,780			11.41
Vested		(130,530	)		12.82
Forfeited		(1,185	)		13.97
Balance as of April 3, 2016		379,555		$	12.95

To satisfy employee minimum statutory tax withholding requirements for nonvested share awards that vest, the Company withholds and retires a portion of the vesting common shares, unless an employee elects to pay cash. In the first quarter of fiscal 2016, the Company withheld 53,682 common shares with a total value of $0.6 million. This amount is presented as a cash outflow from financing activities in the accompanying interim unaudited condensed consolidated statement of cash flows.

As of April 3, 2016, there was $4.5 million and $0.2 million of total unrecognized compensation expense related to nonvested share awards and nonvested share unit awards, respectively. That expense is expected to be recognized over a weighted-average period of 3.0 years and 0.7 years for nonvested share awards and nonvested share unit awards, respectively.

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Apr. 03, 2016
Accounting Policies [Abstract]
Consolidation	Consolidation The accompanying Interim Financial Statements include the accounts of Big 5 Sporting Goods Corporation, Big 5 Corp. and Big 5 Services Corp. Intercompany balances and transactions have been eliminated in consolidation.
Reporting Period	Reporting Period The Company follows the concept of a 52-53 week fiscal year, which ends on the Sunday nearest December 31. Fiscal year 2016 is comprised of 52 weeks and ends on January 1, 2017. Fiscal year 2015 was comprised of 53 weeks and ended on January 3, 2016. The four quarters of fiscal 2016 are each comprised of 13 weeks. The first three quarters in fiscal 2015 were each comprised of 13 weeks, and the fourth quarter of fiscal 2015 was comprised of 14 weeks.
Recently Adopted Accounting Updates	Recently Adopted Accounting Updates In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This ASU requires retrospective adoption and is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. In August 2015, the FASB issued ASU No. 2015-15, Interest—Imputation of Interest (Subtopic 835-30) – Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements—Amendments to SEC Paragraphs Pursuant to Staff Announcement at June 18, 2015 EITF Meeting, which amends Subtopic 835-30 to allow an entity to defer and present debt issuance costs associated with line-of-credit arrangements as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether or not there are any outstanding borrowings on the line-of-credit arrangement. The effective date of ASU No. 2015-03 was unaffected by the issuance of ASU No. 2015-15. The adoption of ASU No. 2015-03 and ASU No. 2015-15 had no impact on the Company’s consolidated financial statements as the Company continues to classify debt issuance costs related to its line-of-credit arrangement in other assets. In April 2015, the FASB issued ASU No. 2015-05, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which provides guidance to customers about whether a cloud computing arrangement includes a software license. If an arrangement includes a software license, the customer should account for the fees related to the software license element in a manner consistent with licenses of other intangible assets. If the arrangement does not include a license, the arrangement will be accounted for as a service contract. This ASU permits either retrospective or prospective adoption and is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The Company adopted ASU No. 2015-05 prospectively, and such adoption did not have a material impact on the Company’s consolidated financial statements. In July 2015, the FASB issued ASU No. 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory, which requires all inventory, other than inventory measured at last-in, first-out (“LIFO”) or the retail inventory method, to be measured at the lower of cost and net realizable value. Net realizable value represents the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This ASU is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The amendments in this ASU should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company elected to early-adopt ASU No. 2015-11 during the first quarter of fiscal 2016, and such early adoption did not have a material impact on the Company’s consolidated financial statements. In November 2015, the FASB issued ASU No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes, which requires that deferred tax liabilities and assets be classified as noncurrent in a classified balance sheet. Prior to the issuance of this guidance, deferred tax liabilities and assets were required to be separately classified into a current amount and a noncurrent amount in the balance sheet. The new accounting guidance represents a change in accounting principle and the standard is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years, with earlier application permitted as of the beginning of an interim or annual reporting period. The Company elected to early-adopt ASU No. 2015-17 during the first quarter of fiscal 2016 and retrospectively apply the presentation. Accordingly, deferred tax assets in the amount of $11.1 million, which were previously classified as current assets as of January 3, 2016, were reclassified to non-current deferred income tax assets on the Company's consolidated balance sheet to conform to current year presentation.
Recently Issued Accounting Updates	Recently Issued Accounting Updates In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which includes amendments that create Topic 606 and supersede the revenue recognition requirements in Topic 605, Revenue Recognition, including most industry-specific revenue recognition guidance throughout the Industry Topics of the Codification. In addition, the amendments supersede the cost guidance in Subtopic 605-35, Revenue Recognition—Construction-Type and Production-Type Contracts, and create new Subtopic 340-40, Other Assets and Deferred Costs—Contracts with Customers. In summary, the core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in ASU No. 2014-09 were originally effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application was not permitted. On July 9, 2015, the FASB decided to defer for one year the effective date of ASU No. 2014-09, while also deciding to permit early application. With these changes, ASU No. 2014-09 will become effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2017, with early application permitted as of the original effective date in ASU No. 2014-09 (i.e., annual reporting periods beginning after December 15, 2016). The Company is evaluating the future impact of this ASU, including the deferral decisions reached by the FASB, on the consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires lessees to recognize on the balance sheet assets and liabilities for leases with lease terms of more than 12 months. Consistent with current accounting principles generally accepted in the United States of America (“GAAP”), the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee will depend primarily on its classification as a finance or operating lease. However, unlike current GAAP—which requires only capital leases to be recognized on the balance sheet—the new ASU will require both types of leases to be recognized on the balance sheet. The ASU will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. This ASU shall be applied at the beginning of the earliest period presented using the modified retrospective approach, which includes a number of practical expedients that an entity may elect to apply. Early application of ASU No. 2016-02 is permitted. The Company is evaluating the future impact of this ASU on the consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which includes multiple provisions intended to simplify various aspects of the accounting for share-based payments, including treatment of excess tax benefits and forfeitures, as well as consideration of minimum statutory tax withholding requirements. The ASU will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016, with early application permitted in any interim or annual period. The Company is evaluating the future impact of this ASU on the consolidated financial statements. Other relevant recently issued accounting updates are not expected to have a material impact on the Company’s consolidated financial statements.
Use of Estimates	Use of Estimates Management has made a number of estimates and assumptions relating to the reporting of assets, liabilities and stockholders’ equity and the disclosure of contingent assets and liabilities as of the date of the Interim Financial Statements and reported amounts of revenue and expense during the reporting period to prepare these Interim Financial Statements in conformity with GAAP. Certain items subject to such estimates and assumptions include the carrying amount of merchandise inventories, property and equipment, and goodwill; valuation allowances for receivables, sales returns and deferred income tax assets; estimates related to gift card breakage and the valuation of share-based compensation awards; and obligations related to asset retirements, litigation, self-insurance liabilities and employee benefits. Actual results could differ significantly from these estimates under different assumptions and conditions.
Revenue Recognition	Revenue Recognition The Company recognizes revenue from retail sales at the point of sale through its retail stores. For e-commerce sales, revenue is recognized when the merchandise is delivered to the customer. Shipping and handling fees, when billed to customers for e-commerce sales, are included in net sales. An allowance for sales returns is estimated based upon historical experience and recorded as a reduction in sales in the relevant period. Cash received from the sale of gift cards is recorded as a liability, and revenue is recognized upon the redemption of the gift card or when it is determined that the likelihood of redemption is remote (“gift card breakage”) and no liability to relevant jurisdictions exists. The Company determines the gift card breakage rate based upon historical redemption patterns and recognizes gift card breakage on a straight-line basis over the estimated gift card redemption period (20 quarters as of the end of the first quarter of fiscal 2016). The Company recognized approximately $112,000 and $111,000 in gift card breakage revenue for the first quarter of fiscal 2016 and 2015, respectively. The Company had outstanding gift card liabilities of $4.2 million and $4.9 million as of April 3, 2016 and January 3, 2016, respectively, which are included in accrued expenses. The Company records sales tax collected from its customers on a net basis, and therefore excludes it from revenue as defined in Accounting Standards Codification (“ASC”) 605, Revenue Recognition.
Share-Based Compensation	Share-Based Compensation The Company accounts for share-based compensation in accordance with ASC 718, Compensation—Stock Compensation. The Company recognizes compensation expense on a straight-line basis over the requisite service period using the fair-value method for share option awards, nonvested share awards and nonvested share unit awards granted with service-only conditions. See Note 9 to the Interim Financial Statements for a further discussion on share-based compensation.
Valuation of Merchandise Inventories, Net	Valuation of Merchandise Inventories, Net The Company’s merchandise inventories are made up of finished goods and are valued at the lower of cost or net realizable value using the weighted-average cost method that approximates the first-in, first-out (“FIFO”) method. Average cost includes the direct purchase price of merchandise inventory, net of certain vendor allowances and cash discounts, in-bound freight-related expense and allocated overhead expense associated with the Company’s distribution center. Management regularly reviews inventories and records valuation reserves for damaged and defective merchandise, merchandise items with slow-moving or obsolescence exposure and merchandise that has a carrying value that exceeds net realizable value. Because of its merchandise mix, the Company has not historically experienced significant occurrences of obsolescence. Inventory shrinkage is accrued as a percentage of merchandise sales based on historical inventory shrinkage trends. The Company performs physical inventories of its stores at least once per year and cycle counts inventories at its distribution center throughout the year. The reserve for inventory shrinkage primarily represents an estimate for inventory shrinkage for each store since the last physical inventory date through the reporting date. These reserves are estimates, which could vary significantly, either favorably or unfavorably, from actual results if future economic conditions, consumer demand and competitive environments differ from expectations.
Valuation of Long-Lived Assets	Valuation of Long-Lived Assets The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Long-lived assets are reviewed for recoverability at the lowest level in which there are identifiable cash flows (“asset group”), usually at the store level. Each store typically requires net investments of approximately $0.5 million in long-lived assets to be held and used, subject to recoverability testing. The carrying amount of an asset group is not considered recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. If the asset group is determined not to be recoverable, then an impairment charge will be recognized in the amount by which the carrying amount of the asset group exceeds its fair value, determined using discounted cash flow valuation techniques, as defined in ASC 360, Property, Plant, and Equipment. The Company determines the sum of the undiscounted cash flows expected to result from the asset group by projecting future revenue, gross margin and operating expense for each store under evaluation for impairment. The estimates of future cash flows involve management judgment and are based upon assumptions about expected future operating performance. Assumptions used in these forecasts are consistent with internal planning, and include assumptions about sales growth rates, gross margins and operating expense in relation to the current economic environment and future expectations, competitive factors in various markets and inflation. The actual cash flows could differ from management’s estimates due to changes in business conditions, operating performance and economic conditions.
Leases and Deferred Rent	Leases and Deferred Rent The Company accounts for its leases under the provisions of ASC 840, Leases. The Company evaluates and classifies its leases as either operating or capital leases for financial reporting purposes. Operating lease commitments consist principally of leases for the Company’s retail store facilities, distribution center, corporate office, information technology hardware and distribution center delivery tractors. Capital lease obligations consist principally of leases for some of the Company’s information technology hardware. Certain of the leases for the Company’s retail store facilities provide for payments based on future sales volumes at the leased location, which are not measurable at the inception of the lease. These contingent rents are expensed as they accrue. Deferred rent represents the difference between rent paid and the amounts expensed for operating leases. Certain leases have scheduled rent increases, and certain leases include an initial period of free or reduced rent as an inducement to enter into the lease agreement (“rent holidays”). The Company recognizes rent expense for rent increases and rent holidays on a straight-line basis over the term of the underlying leases, without regard to when rent payments are made. The calculation of straight-line rent is based on the “reasonably assured” lease term as defined in ASC 840 and may exceed the initial non-cancelable lease term. Landlord allowances for tenant improvements, or lease incentives, are recorded as deferred rent and amortized on a straight-line basis over the “reasonably assured” lease term as a component of rent expense.

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 03, 2016	Mar. 29, 2015	Jan. 03, 2016
Accounting Policies [Line Items]
Reporting period, minimum	364 days
Reporting period, maximum	371 days
Non-current deferred income taxes assets	$ 20,839,000		$ 23,402,000
Estimated gift card redemption period	20 quarters
Recognized gift card breakage revenue	$ 112,000	$ 111,000
Outstanding gift card liabilities	4,200,000		$ 4,900,000
Long-lived assets to be held and used	500,000
New Accounting Pronouncement, Early Adoption, Effect [Member]
Accounting Policies [Line Items]
Non-current deferred income taxes assets	$ 11,100,000
First Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods	91 days		91 days
Second Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods	91 days		91 days
Third Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods	91 days		91 days
Fourth Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods	91 days		98 days

Long-Term Debt - Additional Information (Detail) - USD ($)	3 Months Ended
	Apr. 03, 2016	Jan. 03, 2016
Debt Instrument [Line Items]
Credit Agreement description	On October 18, 2010, the Company entered into a credit agreement with Wells Fargo Bank, National Association (“Wells Fargo”), as administrative agent, and a syndicate of other lenders, which was amended on October 31, 2011 and December 19, 2013 (as so amended, the “Credit Agreement”). The maturity date of the Credit Agreement is December 19, 2018.
Maturity date of Credit Agreement	Dec. 19, 2018
Revolving credit facility	$ 140,000,000
First tier of increase to the borrowing capacity	165,000,000
Maximum limit of credit facility	200,000,000
Sublimit for issuances of letters of credit	50,000,000
Sublimit for swingline loans	$ 20,000,000
Percentage of eligible credit card accounts receivables	90.00%
Percentage of the value of eligible inventory	90.00%
Percentage of the value of eligible in-transit inventory	90.00%
Eligible in-transit inventory threshold	$ 10,000,000
Debt instrument, covenant description	Obligations under the Credit Facility are secured by a general lien and perfected security interest in substantially all of the Company’s assets. The Credit Agreement contains covenants that require the Company to maintain a fixed charge coverage ratio of not less than 1.0:1.0 in certain circumstances, and limit the ability
Events of default, description	The Credit Agreement contains customary events of default, including, without limitation, failure to pay when due principal amounts with respect to the Credit Facility, failure to pay any interest or other amounts under the Credit Facility for five days after becoming due, failure to comply with certain agreements or covenants contained in the Credit Agreement, failure to satisfy certain judgments against the Company, failure to pay when due (or any other default which does or may lead to the acceleration of) certain other material indebtedness in principal amount in excess of $5.0 million, and certain insolvency and bankruptcy events.
Line of Credit Facility default debt minimum amount	$ 5,000,000
Long-term borrowings	56,569,000	$ 54,846,000
Letter of credit commitments	500,000	500,000
Revolving Credit Borrowings [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 56,600,000	54,800,000
Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	100.00%
First Amendment to Credit Agreement [Member]
Debt Instrument [Line Items]
Credit agreement amendment date	Oct. 31, 2011
Second Amendment to Credit Agreement [Member]
Debt Instrument [Line Items]
Credit agreement amendment date	Dec. 19, 2013
Interest rate, description	the applicable margin for base rate loans (as shown below) plus the highest of (a) the Federal funds rate, as in effect from time to time, plus one-half of one percent (0.50%), (b) the LIBO rate, as adjusted to account for statutory reserves, plus one percent (1.00%), or (c) the rate of interest in effect for such day as publicly announced from time to time by Wells Fargo as its “prime rate.”
Commitment fee assessed	0.25%
Second Amendment to Credit Agreement [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Applicable margin in addition to variable rate	0.50%
Second Amendment to Credit Agreement [Member] \| LIBO Rate [Member]
Debt Instrument [Line Items]
Applicable margin in addition to variable rate	1.00%
Wells Fargo Bank National Association [Member]
Debt Instrument [Line Items]
Remaining borrowing availability	$ 82,900,000	$ 84,700,000

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Apr. 03, 2016	Jan. 03, 2016
Income Tax Contingency [Line Items]
Deferred tax assets valuation allowance	$ 0	$ 0
Unrecognized tax benefits	$ 0	0
Unrecognized tax benefits, period	Over the next 12 months
Accrued interest or penalties	$ 0	$ 0
Write-off of deferred tax assets related to share based compensation	700,000
Income taxes recorded in accounts receivable	$ 1,900,000
Earliest Tax Year [Member] \| Federal [Member]
Income Tax Contingency [Line Items]
Income tax returns in period	2012
Earliest Tax Year [Member] \| State and Local [Member]
Income Tax Contingency [Line Items]
Income tax returns in period	2011

Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Earnings Per Share [Abstract]
Net (loss) income	$ (1,119)	$ 2,314
Weighted-average shares of common stock outstanding:
Basic	21,583	21,809
Dilutive effect of common stock equivalents arising from share option, nonvested share and nonvested share unit awards		190
Diluted	21,583	21,999
Basic earnings per share	$ (0.05)	$ 0.11
Diluted earnings per share	$ (0.05)	$ 0.11

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Share-Based Compensation - Additional Information (Detail) - USD ($)		3 Months Ended
	Jul. 24, 2014	Apr. 03, 2016	Mar. 29, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense		$ 600,000	$ 500,000
Shares withheld for tax requirements		53,682
Tax withholding payments for share-based compensation		$ 613,000	$ 685,000
Share Option Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum expiration period of share based payment awards granted		10 years
Granted, shares		0	0
Unrecognized compensation expense		$ 200,000
Weighted-average period of recognition		2 years 2 months 12 days
Share Option Awards [Member] \| Share-based Compensation Award, Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)		25.00%
Performance Shares [Member] \| Share-based Compensation Award, Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)		25.00%
Performance Shares [Member] \| Share-based Compensation Award, Tranche One [Member] \| Non-Employee Directors [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)	100.00%
Vesting period	1 year
Nonvested Share Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition		3 years
Fair value of nonvested share awards		$ 1,500,000	$ 1,700,000
Issuance of nonvested share awards, Shares		162,780	147,940
Weighted-average grant-date fair value per share, granted		$ 11.41	$ 13.01
Unrecognized compensation expenses		$ 4,500,000
Nonvested Share Unit Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition		8 months 12 days
Fair value of nonvested share awards		$ 0	$ 0
Unrecognized compensation expenses		$ 200,000

Share-Based Compensation - Summary of Nonvested Share Awards Activity (Detail) - Nonvested Share Awards [Member] - $ / shares	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Nonvested Shares, Beginning Balance	348,490
Granted, Shares	162,780	147,940
Vested, Shares	(130,530)
Forfeited, Shares	(1,185)
Nonvested Shares, Ending Balance	379,555
Weighted-Average Grant-Date Fair Value, Beginning Balance	$ 13.63
Weighted-Average Grant-Date Fair Value, Granted	11.41	$ 13.01
Weighted-Average Grant-Date Fair Value, Vested	12.82
Weighted-Average Grant-Date Fair Value, Forfeited	13.97
Weighted-Average Grant-Date Fair Value, Ending Balance	$ 12.95

Description of Business - Additional Information (Detail)	3 Months Ended
	Apr. 03, 2016 ft² Store Segment
Description Of Business [Line Items]
Number of operating stores \| Store	434
Area of traditional sporting goods store \| ft²	11,000
Number of reportable segment \| Segment	1
Big 5 Corp [Member]
Description Of Business [Line Items]
Subsidiary interest ownership percentage	100.00%
Big 5 Service Corp [Member]
Description Of Business [Line Items]
Subsidiary interest ownership percentage	100.00%

Accrued Expenses - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Apr. 03, 2016	Jan. 03, 2016
Payables And Accruals [Abstract]
Payroll and related expense	$ 19,664	$ 24,090
Occupancy expense	10,506	10,693
Sales tax	7,738	11,307
Other	20,741	23,434
Accrued expenses	$ 58,649	$ 69,524

Subsequent Event - Additional Information (Detail) - $ / shares	3 Months Ended
	Apr. 03, 2016	Jul. 03, 2016
Subsequent Event [Line Items]
Dividend declared per share, payable date	Jun. 15, 2016
Dividend declared per share, record date	Jun. 01, 2016
Scenario, Forecast [Member]
Subsequent Event [Line Items]
Dividend per share		$ 0.125

Long-Term Debt - Average Daily Excess Availability for Preceding Fiscal Quarter (Detail) - Second Amendment to Credit Agreement [Member]	3 Months Ended
	Apr. 03, 2016
Level I [Member]
Line of Credit Facility [Line Items]
Average Daily Excess Availability	Greater than or equal to $100,000,000
LIBO Rate Applicable Margin	1.25%
Base Rate Applicable Margin	0.25%
Level II [Member]
Line of Credit Facility [Line Items]
Average Daily Excess Availability	Less than $100,000,000 but greater than or equal to $40,000,000
LIBO Rate Applicable Margin	1.50%
Base Rate Applicable Margin	0.50%
Level III [Member]
Line of Credit Facility [Line Items]
Average Daily Excess Availability	Less than $40,000,000
LIBO Rate Applicable Margin	1.75%
Base Rate Applicable Margin	0.75%