Vitamin Shoppe (VSI) 10-K 25 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 28, 2013	Jan. 25, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	28-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'VSI	'	'
Entity Registrant Name	'Vitamin Shoppe, Inc.	'	'
Entity Central Index Key	'0001360530	'	'
Current Fiscal Year End Date	'--12-28	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	30,572,408	'
Entity Public Float	'	'	$1,351,750,272

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 28, 2013	Dec. 29, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$74,036	$81,168
Inventories	163,921	137,693
Prepaid expenses and other current assets	31,292	14,572
Deferred income taxes	5,936	7,904
Total current assets	275,185	241,337
Property and equipment, net	120,142	95,401
Goodwill	210,633	177,248
Other intangibles, net	71,264	69,116
Other long-term assets	4,840	3,183
Total assets	682,064	586,285
Current liabilities:	'	'
Accounts payable	39,106	22,445
Deferred sales	21,712	20,912
Accrued expenses and other current liabilities	42,026	44,527
Total current liabilities	102,844	87,884
Deferred income taxes	11,588	13,011
Deferred rent	36,032	30,150
Other long-term liabilities	3,260	7,822
Commitments and contingencies	'	'
Stockholders' equity:	'	'
Preferred stock, $0.01 par value; 250,000,000 shares authorized and no shares issued and outstanding at December 28, 2013 and December 29, 2012	'	'
Common stock, $0.01 par value; 400,000,000 shares authorized, 30,531,550 shares issued and 30,525,234 shares outstanding at December 28, 2013, and 30,170,627 shares issued and outstanding at December 29, 2012	305	302
Additional paid-in capital	302,314	287,574
Treasury stock, at cost; 6,316 shares at December 28, 2013 and no shares at December 29, 2012	-280	'
Accumulated other comprehensive (loss) income	-86	1
Retained earnings	226,087	159,541
Total stockholders' equity	528,340	447,418
Total liabilities and stockholders' equity	$682,064	$586,285

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 28, 2013	Dec. 29, 2012
Statement Of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	250,000,000	250,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	30,531,550	30,170,627
Common stock, shares outstanding	30,525,234	30,170,627
Treasury stock, shares	6,316	0

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Net sales	$1,087,469	$950,902	$856,586
Cost of goods sold	709,823	617,920	563,627
Gross profit	377,646	332,982	292,959
Selling, general and administrative expenses	267,354	233,610	216,125
Income from operations	110,292	99,372	76,834
Loss on extinguishment of debt	'	'	635
Interest expense, net	495	659	2,325
Income before provision for income taxes	109,797	98,713	73,874
Provision for income taxes	43,251	37,888	29,010
Net income	$66,546	$60,825	$44,864
Weighted average common shares outstanding	'	'	'
Basic	29,992,620	29,473,711	28,802,103
Diluted	30,541,057	30,110,237	29,556,024
Net income per common share	'	'	'
Basic	$2.22	$2.06	$1.56
Diluted	$2.18	$2.02	$1.52

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Condensed Consolidated Statements Of Comprehensive Income [Abstract]	'	'	'
Net income	$66,546	$60,825	$44,864
Other comprehensive (loss) income:	'	'	'
Foreign currency translation adjustments	-87	1	'
Other comprehensive (loss) income	-87	1	'
Comprehensive income	$66,459	$60,826	$44,864

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Retained Earnings [Member]
In Thousands, except Share data
Beginning balance, value at Dec. 25, 2010	$297,696	$286	'	$243,558	'	$53,852
Beginning balance, shares at Dec. 25, 2010	'	28,627,897	'	'	'	'
Comprehensive (loss) income	44,864	'	'	'	'	44,864
Equity compensation	5,166	'	'	5,166	'	'
Issuance of restricted shares, value	'	2	'	-2	'	'
Issuance of restricted shares, shares	'	140,102	'	'	'	'
Cancelation of restricted shares, value	-35	'	'	-35	'	'
Cancelation of restricted shares, shares	'	-8,890	'	'	'	'
Issuance of shares under employee stock purchase plan, value	917	'	'	917	'	'
Issuance of shares under employee stock purchase plan, shares	'	32,120	'	'	'	'
Exercise of stock options, value	6,087	4	'	6,083	'	'
Exercise of stock options, shares	'	425,659	'	'	'	'
Tax benefits on exercise of stock options	1,108	'	'	1,108	'	'
Ending balance, value at Dec. 31, 2011	355,803	292	'	256,795	'	98,716
Ending balance, shares at Dec. 31, 2011	'	29,216,888	'	'	'	'
Comprehensive (loss) income	60,826	'	'	'	1	60,825
Equity compensation	6,500	'	'	6,500	'	'
Issuance of restricted shares, value	'	1	'	-1	'	'
Issuance of restricted shares, shares	'	145,462	'	'	'	'
Cancelation of restricted shares, value	'	'	'	'	'	'
Cancelation of restricted shares, shares	'	-45,991	'	'	'	'
Issuance of shares under employee stock purchase plan, value	721	'	'	721	'	'
Issuance of shares under employee stock purchase plan, shares	'	18,897	'	'	'	'
Exercise of stock options, value	11,236	9	'	11,227	'	'
Exercise of stock options, shares	'	835,371	'	'	'	'
Tax benefits on exercise of stock options	12,332	'	'	12,332	'	'
Ending balance, value at Dec. 29, 2012	447,418	302	'	287,574	1	159,541
Ending balance, shares at Dec. 29, 2012	'	30,170,627	'	'	'	'
Comprehensive (loss) income	66,459	'	'	'	-87	66,546
Equity compensation	8,333	'	'	8,333	'	'
Issuance of restricted shares, value	'	1	'	-1	'	'
Issuance of restricted shares, shares	'	166,573	'	'	'	'
Purchase of treasury stock, value	-280	'	-280	'	'	'
Purchase of treasury stock, shares	'	'	-6,316	'	'	'
Cancelation of restricted shares, value	'	'	'	'	'	'
Cancelation of restricted shares, shares	'	-16,610	'	'	'	'
Issuance of shares under employee stock purchase plan, value	849	'	'	849	'	'
Issuance of shares under employee stock purchase plan, shares	'	20,887	'	'	'	'
Exercise of stock options, value	3,487	2	'	3,485	'	'
Exercise of stock options, shares	190,073	190,073	'	'	'	'
Tax benefits on exercise of stock options	2,074	'	'	2,074	'	'
Ending balance, value at Dec. 28, 2013	$528,340	$305	($280)	$302,314	($86)	$226,087
Ending balance, shares at Dec. 28, 2013	'	30,531,550	-6,316	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$66,546	$60,825	$44,864
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization of fixed and intangible assets	28,026	23,076	20,300
Impairment charge on fixed assets	'	730	887
Impairment charge on intangible assets	'	'	325
Gain on insurance recoveries	-1,079	'	'
Amortization of deferred financing fees	96	258	372
Loss on extinguishment of debt, net of premium on Note redemption	'	'	635
Loss on disposal of fixed assets	'	711	15
Deferred income taxes	545	-6,055	-1,476
Deferred rent	810	292	1,068
Equity compensation expense	8,333	6,500	5,166
Proceeds from insurance recoveries	757	'	'
Tax benefits on exercises of stock options	-2,074	-12,332	-1,108
Changes in operating assets and liabilities:	'	'	'
Inventories	-13,429	-16,201	-10,189
Prepaid expenses and other current assets	-15,668	558	-4,259
Other long-term assets	-968	-629	-395
Accounts payable	11,688	2,226	3,978
Deferred sales	734	2,053	2,930
Accrued expenses and other current liabilities	-1,416	15,842	13,641
Other long-term liabilities	-1,779	496	379
Net cash provided by operating activities	81,122	78,350	77,133
Cash flows from investing activities:	'	'	'
Capital expenditures	-42,782	-30,775	-25,046
Acquisition of Super Supplements	-50,542	'	'
Trademarks and other intangible assets	-648	-399	'
Proceeds from insurance recoveries	322	'	'
Net cash used in investing activities	-93,650	-31,174	-25,046
Cash flows from financing activities:	'	'	'
Borrowings under revolving credit agreement	'	'	12,000
Repayment of borrowings under revolving credit agreement	'	'	-30,000
Borrowings under term loan	'	'	25,000
Repayment of borrowings under term loan	'	'	-25,000
Payments of capital lease obligations	-135	-1,052	-1,732
Redemption of long term debt (Notes)	'	'	-55,106
Proceeds from exercises of common stock options	3,487	11,236	6,087
Issuance of shares under employee stock purchase plan	849	721	917
Purchase of treasury stock	-280	'	'
Tax benefits on exercises of stock options	2,074	12,332	1,108
Deferred financing fees and other	-532	'	-575
Net cash provided by (used in) financing activities	5,463	23,237	-67,301
Effect of exchange rate changes on cash and cash equivalents	-67	1	'
Net (decrease) increase in cash and cash equivalents	-7,132	70,414	-15,214
Cash and cash equivalents beginning of year	81,168	10,754	25,968
Cash and cash equivalents end of year	74,036	81,168	10,754
Supplemental disclosures of cash flow information:	'	'	'
Interest paid	390	362	2,401
Income taxes paid	57,064	30,817	28,199
Supplemental disclosures of non-cash investing activities:	'	'	'
Liability for purchases of property and equipment	7,106	5,064	4,991
Assets acquired under capital lease	$314	$264	'

Basis_of_Presentation

Basis of Presentation	12 Months Ended
	Dec. 28, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	1. Basis of Presentation
	Vitamin Shoppe, Inc. (“VSI”), is incorporated in the State of Delaware, and through its wholly-owned subsidiary, Vitamin Shoppe Industries Inc. (“Subsidiary” or “Industries”) and Industries’ wholly-owned subsidiaries, VS Direct Inc. (“Direct”), Vitamin Shoppe Mariner, Inc. (“Mariner”), Vitamin Shoppe Global, Inc. (“Global”) and Vitapath Canada Limited (“VCL”, and, together with Industries, Direct, Mariner, Global and VSI, the “Company”), is a leading multi-channel specialty retailer and direct marketer of nutritional products. Sales of both national brands and proprietary brands of vitamins, minerals, specialty supplements, herbs, sports nutrition, homeopathic remedies and other health and beauty aids are made through VSI-owned retail stores, the internet and mail order catalogs to customers located primarily in the United States. VSI operates from its headquarters in North Bergen, New Jersey.
	The consolidated financial statements for the fiscal years ended December 28, 2013, December 29, 2012 and December 31, 2011 include the accounts of VSI and subsidiary. All intercompany transactions and balances have been eliminated in consolidation.
	The Company’s fiscal year ends on the last Saturday in December. As used herein, the term “Fiscal Year” or “Fiscal” refers to a 52-week or 53-week period, ending on the last Saturday in December. Fiscal 2013 was a 52-week period ended December 28, 2013, Fiscal 2012 was a 52-week period ended December 29, 2012, and Fiscal 2011 was a 53-week period ended December 31, 2011. Unless otherwise stated, amounts for Fiscal 2011 are based on a 53-week period.
	On February 14, 2013, the Company acquired substantially all of the assets and assumed certain liabilities of Super Supplements, Inc. (“Super Supplements”), a specialty retailer of vitamins, minerals, specialty supplements and sports nutrition, including 31 retail locations in Washington, Oregon and Idaho, a distribution center in Seattle, Washington and an e-commerce business. The total purchase price was approximately $50.5 million in cash and the assumption of certain liabilities. Refer to Note 3. Acquisition for additional information.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 28, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	2. Summary of Significant Accounting Policies
	Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and liabilities at the date of the financial statements, and revenue and expenses during the reporting period. Actual results could differ from those estimates.
	Cash and Cash Equivalents—Cash and cash equivalents include all highly liquid investments with original maturities of ninety days or less. The Company reclassifies cash overdrafts to accounts payable.
	Inventories—Inventories, which are comprised solely of finished goods, are stated at the lower of cost or market value. Cost is determined using the weighted average method. Finished goods inventory includes costs on freight on internally transferred merchandise, rent for the distribution centers and costs associated with our buying department and distribution facilities, including payroll which are capitalized into inventory and then expensed as merchandise is sold. In addition, the cost of inventory is reduced by purchase discounts and other allowances received from certain of our vendors. The Company estimates losses for expiring inventory and the net realizable value of inventory based on when a product is close to expiration and not expected to be sold, when a product has reached its expiration date, or when a product is not expected to be saleable. In determining the reserves for these products consideration is given to such factors as the amount of inventory on hand, the remaining shelf life, current and expected market conditions, historical trends and the likelihood of recovering the inventory costs based on anticipated demand. The following table details the activity and balances for the Company’s reserve for expiring inventory for the years ended December 28, 2013, December 29, 2012, and December 31, 2011 (in thousands):
		Balance at		Amounts		Write-Offs			Balance at
		Beginning		Charged to		Against			End of
		of Fiscal Year		Cost of		Reserves			Fiscal Year
				Goods Sold
	Obsolescence Reserves:
	Fiscal Year Ended December 28, 2013	$	1,841.20	$	4,637.90	$	(3,838.8	)	$	2,640.30
	Fiscal Year Ended December 29, 2012		1,785.70		2,957.60		(2,902.1	)		1,841.20
	Fiscal Year Ended December 31, 2011		1,800.70		3,284.00		(3,299.0	)		1,785.70
	Property and Equipment, Net—Property and equipment, net is stated at cost less accumulated depreciation and amortization. Depreciation and amortization are provided for on a straight-line basis over the estimated useful lives of the related assets. Furniture, fixtures and equipment are generally depreciated over seven years. Leasehold improvements are amortized generally over the shorter of their useful lives or related lease terms. The direct internal and external costs associated with the development of the features and functionality of the Company’s website, transaction processing systems, telecommunications infrastructure and network operations, are capitalized and are amortized on a straight line basis over the estimated useful lives of generally five years. Capitalization of costs begin when the preliminary project stage is completed and management authorizes and commits to funding the computer software project and that it is probable that the project will be completed and the software will be used to perform the function intended. Depreciation of the assets commence when they are put into use. Expenditures for repairs and maintenance are expensed as incurred and expenditures for major renovations and improvements are capitalized. Upon retirement or disposition of property and equipment, the applicable cost and accumulated depreciation are removed from the accounts and any resulting gains or losses are included in the results of operations.
	Impairment of Long-Lived Assets—The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets held and used is measured by a comparison of the carrying amount of an asset to undiscounted pre-tax future net cash flows expected to be generated by that asset. If the undiscounted future cash flows are not adequate to recover the carrying value of the asset, an impairment loss is recognized for the amount by which the carrying amount of the assets exceeds the fair value of the assets.
	Goodwill and Other Intangibles—Goodwill and other indefinite-lived intangibles are not amortized. Evaluations for impairment are performed at least annually, in the fourth quarter of each year, or whenever impairment indicators exist. Goodwill is evaluated for impairment at the reporting unit level (the Company’s operating segments). The evaluation of goodwill and other indefinite-lived intangibles may first consider qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value is less than its carrying value. A quantitative evaluation is performed if the qualitative evaluation results in a more likely than not determination or if a qualitative evaluation is not performed. The Company’s quantitative impairment tests involve calculating the fair value of both reporting units using the discounted cash flow analysis method along with the market multiples method which is used for additional validation of the fair value calculated. These valuation methods require certain assumptions and estimates be made by the Company regarding certain industry trends and future profitability. It is the Company’s policy to conduct goodwill impairment testing from information based on current business projections, which include projected future revenues and cash flows. The cash flows utilized in the discounted cash flow analysis are based on five-year financial forecasts developed internally by management. Cash flows for each reporting unit are discounted using an internally derived weighted average cost of capital which reflects the costs of borrowing for the funding of each unit as well as the risk associated with the units themselves. Also as part of the quantitative test, the Company conducts the test using a 10% decrease in its revenue projections as an additional sensitivity test to ensure the reporting unit’s fair value is greater than its carrying value should events in the future be less favorable than anticipated. If the carrying amount of a reporting unit exceeds its fair value, the Company would compare the implied fair value of the reporting unit goodwill with its carrying value. To compute the implied fair value of goodwill, the Company would assign the fair value of the reporting unit to all of the assets and liabilities of that unit (including any unrecognized intangible assets) as if the reporting unit had been acquired in a business combination. The excess of the fair value of a reporting unit over the amounts assigned to its assets and liabilities is the implied fair value of goodwill. For indefinite-lived tradenames, we utilize the royalty relief method in our quantitative evaluations. To the extent that the implied fair value associated with the goodwill and indefinite-lived intangible assets is less than the recorded value, this would result in a write down of the carrying value of the asset. Impairment tests between annual tests may be undertaken if an event occurs or circumstances change that would reduce the fair value of a reporting unit below its carrying value. The valuation of the goodwill and indefinite-lived intangible assets is affected by, among other things, the Company’s projections for the future and estimated results of future operations. Changes in the business plan or operating results that are different than the estimates used to develop the valuation of the assets may impact these valuations. For those intangible assets which have definite lives, the Company amortizes their cost on a straight-line basis over their estimated useful lives, the periods of which vary based on their particular contractual terms.
	In Fiscal 2013 the Company performed a qualitative analysis and determined that it is more likely than not that the fair values of each of the Company’s reporting units and indefinite-lived tradename is greater than their respective carrying values. In the fourth quarter of Fiscal 2011, the Company recognized an impairment charge of $0.3 million related to one of its tradenames. There have been no other impairment charges related to other intangibles during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
	Insurance Liabilities—Based on the Company’s assessment of risk and cost efficiency, the Company purchases insurance policies to provide for workers’ compensation, general liability, and property losses, as well as directors’ and officers’ liability. The Company self insures its employee medical benefits, up to a certain limit on individual claims. The accruals for claims incurred but not reported amounted to $1.2 million at December 28, 2013 and $0.9 million at December 29, 2012.
	Rent Expenses, Deferred Rent and Landlord Construction Allowances—Rent expense and rent incentives, including landlord construction allowances, are recognized on a straight-line basis over the lease term. The Company records rent expense for stores and the distribution center as a component of cost of goods sold. The Company accounts for landlord construction allowances as lease incentives and records them as a component of deferred rent, which is recognized in cost of goods sold over the lease term.
	Revenue Recognition—The Company recognizes revenue when merchandise is sold “at point of sale” in retail stores or upon delivery to a direct customer. In addition, shipping fees billed to customers are classified as sales. Amount recognized as shipping revenue during Fiscal 2013, Fiscal 2012, and Fiscal 2011, were $2.5 million, $2.2 million, and $3.4 million, respectively. To arrive at net sales, gross sales are reduced by deferred sales, actual customer returns and a provision for estimated future customer returns, which is based on management’s review of historical and current customer returns. Sales taxes collected from customers are presented on a net basis and as such are excluded from revenue.
	Cost of Goods Sold—The Company includes the cost of inventory sold, costs of warehousing and distribution and store occupancy costs in cost of goods sold. Warehousing and distribution costs include freight on internally transferred merchandise as well as for shipments to direct customers, rent for the distribution centers and costs associated with our buying department and distribution facilities, including payroll, which are capitalized into inventory and then expensed as merchandise is sold. Store occupancy costs include rent, common area maintenance, real estate taxes and utilities.
	Vendor Allowances—Vendor allowances include discounts, allowances and rebates received from vendors and are based on various contract terms. Vendor allowances are recognized as either purchase discounts which represent a reduction of product cost, funding which is capitalized into inventory and recognized in the statement of income as the merchandise is sold, or direct offset which represents funding subject to immediate recognition in the statement of income, depending on the nature of the allowance.
	Frequent Buyer Program—The Company has a frequent buyer program (“Healthy Awards Program”), whereby customers earn points toward free merchandise based on the dollar volume of purchases. Points are earned each calendar year and must be redeemed within the first three months of the following year or they expire. Sales are deferred at the time points are earned based on the value of points that are projected to be redeemed, which are based on historical redemption data. The Company records a liability for points earned within the current period. This is reported as a reduction of sales with a liability recorded as “Deferred sales” on the consolidated balance sheet.
	Store Pre-opening Costs—Costs associated with the opening of new retail stores and start up activities are expensed as incurred.
	Advertising Costs—The costs of advertising for online marketing arrangements, magazines, direct mail, television and radio are expensed the first time the advertising takes place. Costs associated with the production and distribution of the Company’s catalogs are expensed as incurred. Advertising expense was $16.5 million, $14.7 million and $12.6 million for Fiscal 2013, Fiscal 2012 and Fiscal 2011, respectively.
	Online Marketing Arrangements—The Company has entered into online marketing arrangements with various online companies. These agreements are established for periods of 24 months, 12 months or, in some cases, a lesser period and generally provide for compensation based on revenue sharing upon the attainment of stipulated revenue amounts, a percentage of the media expenditure managed by the online partner, or based on the number of visitors that the online company refers to the Company. The Company had no fixed payment commitments during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
	Income Taxes—Deferred income tax assets and liabilities are recorded in accordance with the liability method. Deferred income taxes have been provided for temporary differences between the tax bases and financial reporting bases of the Company’s assets and liabilities using the tax rates and laws in effect for the periods in which the differences are expected to reverse.
	The Company accounts for tax positions based on the provisions of the accounting literature related to accounting for uncertainty in income tax positions. Such literature provides guidance for the recognition threshold and measurement attribute for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. For tax positions that are not more likely than not sustainable upon audit, the Company recognizes the largest amount of the benefit that is more likely than not to be sustained. The Company makes estimates of the potential liability based on our assessment of all potential tax exposures. In addition, the Company uses factors such as applicable tax laws and regulations, current information and past experience with similar issues to make these adjustments. The tax positions are analyzed regularly and adjustments are made as events occur that warrant adjustments for those positions. The Company records interest expense and penalties payable to relevant tax authorities as income tax expense.
	Comprehensive Income—Comprehensive income represents net income plus the results of certain non-stockholders’ equity changes not reflected in the statements of income. The amounts recorded in accumulated other comprehensive income at December 28, 2013 and December 29, 2012, primarily represent the value of foreign currency translation adjustments related to the consolidation of Vitapath Canada Limited.
	Foreign Currency—The local currency is used as the functional currency for Vitapath Canada Limited. We translate assets and liabilities denominated in foreign currency into United States dollars at the current rate of exchange at year end, and translate revenues and expenses at the average exchange rate during the period. Foreign currency translation adjustments are included in other comprehensive income and are reported separately in stockholders’ equity in the consolidated balance sheets.
	Concentrations of Credit Risk—The Company’s customers are consumers who purchase products at the Company’s retail stores, and through the Company’s e-commerce sites and mail-order services. Financial instruments, which potentially subject the Company to concentrations of credit risk, include accounts receivable from credit card processors. As of December 28, 2013, there were no significant concentrations of accounts receivable, or related credit risks. Accounts receivable from credit card processors, included in prepaid expenses and other current assets on the consolidated balance sheets, totaled $7.7 million at December 28, 2013 and $7.4 million at December 29, 2012.
	Glanbia, plc is the only supplier from whom we purchased at least 5% of our merchandise during Fiscal 2013, 2012 and 2011. We purchased approximately 10% of our total merchandise from Glanbia, plc during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
	The Company is subject to concentrations of credit risk associated with cash and cash equivalents, and at times holds cash balances in excess of Federal Deposit Insurance Corporation limits.
	Stock-Based Compensation—Stock-based compensation cost is measured at the grant date based on the fair value of awards and is recognized as expense over the vesting period, net of anticipated forfeitures. With the exception of restricted shares and restricted share units, determining the fair value of stock-based awards at the grant date requires considerable judgment, including estimating expected volatility, expected term and risk-free rate. The expected volatility is derived from the average volatility of similar actively traded companies over our expected holding periods, as well as the Company’s own volatility, which is weighted to adjust for the shorter trading history. Generally, the expected holding period of non performance based options is calculated using the simplified method using the vesting term of 4 years and the contractual term of 10 years, resulting in a holding period of 6.25 years. Certain limited grants have contractual terms of 7.5 years, and/or shorter vesting periods and as such have calculated holding periods of 4 to 5 years. The Company’s performance based stock option grants vest annually over four years depending on a particular year’s attainment of certain internal financial performance metrics. The target metrics underlying the vesting of performance based stock option grants are established each year. Accordingly, the holding period for performance based stock option grants is calculated using the vesting term of 1 year and the remainder of the contractual term of 10 years, depending on which year of the four year grant is currently vesting; e.g. 25% of the grant vesting in year two of the grant would have a holding period calculated using 1 year and the remaining 9 years of the contractual term. The simplified method was chosen as a means to determine the Company’s holding period as prior to November 2009 there was no historical option exercise experience due to the Company being privately held. As of December 28, 2013, there continues to be insufficient information for purposes of determining a Company specific holding period. The risk-free interest rate is derived from the average yields of zero-coupon U.S. Treasury Strips for the expected holding period of each of the Company’s stock option grants. Compensation expense resulting from the granting of restricted shares and restricted share units is based on the grant date fair value of those common shares and is recognized generally over the two to four year vesting period for restricted shares and over the one year vesting period for restricted share units. For accounting purposes, the expense for performance based stock options and performance based restricted shares is calculated and recorded, based on the determination that the achievement of the pre-established performance targets are probable, over the relevant service period. The vesting requirements for performance based stock options and performance based restricted shares permit a catch-up of vesting at the end of the vesting period.
	The Company previously accounted for stock options under Accounting Principles Bulletin (“APB”) No. 25, “Accounting for Stock Issued to Employees” (“APB No. 25”), using the intrinsic value method. The Financial Accounting Standards Board permits companies to adopt its requirements using various methods. The Company adopted the prospective method for all stock option grants issued prior to December 31, 2005. Subsequent to December 31, 2005, under the prospective method, those nonpublic companies that used the minimum value method of measuring equity share options and similar instruments for either recognition or pro forma disclosure purposes applied the new fair value measurement requirements prospectively to new awards and to awards modified, repurchased, or cancelled after the required effective date. The Company continues to account for any portion of awards outstanding at the date of initial application using the accounting principles originally applied to those awards as allowed by the prospective method. As such, no stock-based compensation costs were reflected in net income for those stock option grants issued prior to the adoption of the provisions of fair value accounting for equity shares, as the Company was not required to do so under the previous guidance nor under the new guidance.
	Expense related to shares purchased under the Company’s Employee Stock Purchase Plan (“ESPP”) is accounted for based on fair value recognition requirements similar to stock options. ESPP participation occurs each calendar quarter (the “Participation Period”) and the expense of which is subject to employee participation in the plan. Under the ESPP, participating employees are allowed to purchase shares at 85% of the lower of the market price of the Company’s common stock at either the first or last trading day of the Participation Period. Compensation expense related to the ESPP is based on the estimated fair value of the discount and purchase price offered on the estimated shares to be purchased under the ESPP. Expense is calculated quarterly, based on the employee contributions made over the applicable three-month Participation Period, using volatility and risk free rates applicable to that three-month period.
	Net Income Per Share—The Company’s basic net income per share excludes the dilutive effect of stock options, unvested restricted shares and unvested restricted share units. It is based upon the weighted average number of common shares outstanding during the period divided into net income.
	Diluted net income per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock. Stock options, unvested restricted shares and unvested restricted share units are included as potential dilutive securities for the periods applicable, using the treasury stock method to the extent dilutive.
	The components of the calculation of basic net income per common share and diluted net income per common share are as follows (in thousands except share and per share data):
		Fiscal Year Ended
		December 28,		December 29,		December 31,
		2013		2012		2011
	Numerator:
	Net income available to common stockholders	$	66,546	$	60,825	$	44,864
	Denominator:
	Basic weighted average common shares outstanding		29,992,620		29,473,711		28,802,103
	Effect of dilutive securities:
	Stock options		402,814		545,426		700,785
	Restricted shares		141,573		89,038		53,136
	Restricted share units		4,050		2,062		—
	Diluted weighted average common shares outstanding		30,541,057		30,110,237		29,556,024
	Basic net income per common share	$	2.22	$	2.06	$	1.56
	Diluted net income per common share	$	2.18	$	2.02	$	1.52
	Stock options for the fiscal years ended December 28, 2013, December 29, 2012 and December 31, 2011 for 23,319, 42,305 and 110,460 shares, respectively, have been excluded from the above calculation as they were anti-dilutive.
	Reclassifications—Where appropriate, the Company has reclassified prior years’ financial statements to conform to current year presentation.
	Recent Accounting Pronouncements—The Company has considered all new accounting pronouncements and has concluded that there are no new pronouncements that may have a material impact on its results of operations, financial condition, or cash flows, based on current information.

Acquisition

Acquisition	12 Months Ended
	Dec. 28, 2013
Business Combinations [Abstract]	'
Acquisition	'
	3. Acquisition
	On February 14, 2013, the Company acquired substantially all of the assets and assumed certain liabilities of Super Supplements, a specialty retailer of vitamins, minerals, specialty supplements and sports nutrition, including 31 retail locations in Washington, Oregon and Idaho, a distribution center in Seattle, Washington and an e-commerce business. The total purchase price was approximately $50.5 million in cash and the assumption of certain liabilities. The acquisition was financed by existing cash on the Company’s balance sheet. The results of operations of the acquired business are included in the Company’s results from the acquisition date.
	The acquisition resulted in goodwill primarily related to growth opportunities. The Company expensed acquisition and integration costs of $4.3 million during Fiscal 2013, which are included in the consolidated statement of income within selling, general and administrative expenses.
	The purchase price of the acquisition has been allocated to the net tangible and intangible assets acquired, with the remainder recorded as goodwill on the basis of estimated fair values. The goodwill was allocated to the Company’s retail segment. The allocation is as follows (in thousands):
	Total consideration transferred	$	50,542
	Less: net identifiable assets acquired:
	Current assets		13,876
	Non-current assets		7,027
	Intangible assets		2,400
	Current liabilities		(5,350	)
	Long-term liabilities		(796	)
	Total net identifiable assets acquired	$	17,157
	Goodwill	$	33,385
	Intangible assets consist of a tradename of $2.4 million which is being amortized over the estimated useful life of 3 years. Long-term liabilities include unfavorable leases for certain retail locations of $0.8 million. The unfavorable lease liabilities are being amortized to rent expense over their respective lease terms, ranging from 2 to 9 years. The goodwill of $33.4 million is expected to be amortized for tax purposes.
	From February 15, 2013 through December 28, 2013 the acquired business generated net sales of $66.1 million and net income of $3.1 million, excluding acquisition and integration costs. Pro forma results are not presented as the acquisition was not significant to the operating results for Fiscal 2013 and Fiscal 2012.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 28, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	4. Goodwill and Intangible Assets
	Goodwill is allocated between the Company’s segments (business units), retail and direct. The following table discloses the carrying value of all intangible assets (in thousands):
		December 28, 2013						December 29, 2012
		Gross		Accumulated		Net		Gross		Accumulated		Net
		Carrying		Amortization				Carrying		Amortization
		Amount						Amount
	Intangible assets:
	Goodwill	$	210,633	$	—	$	210,633	$	177,248	$	—	$	177,248
	Tradenames - Indefinite-lived		68,405		—		68,405		68,405		—		68,405
	Tradenames - Definite-lived		3,562		785		2,777		514		10		504
	Intangibles related to asset purchase		2,950		2,868		82		3,000		2,793		207
		$	285,550	$	3,653	$	281,897	$	249,167	$	2,803	$	246,364
	Intangible amortization expense for Fiscal 2013, Fiscal 2012 and Fiscal 2011 was $0.9 million, $0.1 million and $0.5 million, respectively. The annual impairment tests for goodwill and tradenames were performed during the fourth quarter of Fiscal 2013. The Company recognized an impairment charge of $0.3 million in the fourth quarter of Fiscal 2011 related to one of its tradenames. There have been no other impairment charges related to goodwill or other intangibles during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
	The useful lives of the Company’s definite-lived intangible assets are between 3 to 15 years. The expected amortization expense on definite-lived intangible assets on the Company’s consolidated balance sheet at December 28, 2013, is as follows (in thousands):
	Fiscal 2014	$	997
	Fiscal 2015		915
	Fiscal 2016		215
	Fiscal 2017		115
	Fiscal 2018		115
	Thereafter		502
		$	2,859

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 28, 2013
Property Plant And Equipment [Abstract]	'
Property and Equipment	'
	5. Property and Equipment
	Property and equipment consists of the following (in thousands):
		December 28,			December 29,
		2013			2012
	Leasehold improvements	$	141,842		$	122,061
	Furniture, fixtures and equipment		135,921			108,429
	Software		42,911			37,063
			320,674			267,553
	Less: accumulated depreciation and amortization		(207,928	)		(182,173	)
	Subtotal		112,746			85,380
	Construction in progress		7,396			10,021
		$	120,142		$	95,401
	Depreciation and amortization expense on property and equipment for the fiscal years ended December 28, 2013, December 29, 2012, and December 31, 2011 was approximately $27.1 million, $22.9 million and $19.8 million, respectively. The Company recognized impairment charges of $0.7 million during Fiscal 2012 on fixed assets related to three of its underperforming retail locations still in use in the Company’s operations. The Company recognized impairment charges of $0.9 million during Fiscal 2011 on fixed assets related to three of its underperforming retail locations still in use in the Company’s operations.
	Depreciation and amortization expense on property and equipment is recorded in selling, general and administrative expenses on the consolidated statements of income. Assets held under capital leases are classified under furniture, fixtures and equipment. Capital leases were $0.6 million, net of accumulated amortization of $5.2 million, at December 28, 2013, and $1.1 million, net of accumulated amortization of $4.4 million, at December 29, 2012.

Accrued_Expenses_and_Other_Cur

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 28, 2013
Payables And Accruals [Abstract]	'
Accrued Expenses and Other Current Liabilities	'
	6. Accrued Expenses and Other Current Liabilities
	Accrued expenses and other current liabilities consist of the following (in thousands):
		December 28,		December 29,
		2013		2012
	Accrued salaries and related expenses	$	9,940	$	14,985
	Sales tax payable and related expenses		6,334		5,642
	Accrued fixed asset additions		6,286		4,624
	Other accrued expenses		19,466		19,276
		$	42,026	$	44,527
	The Company is involved in ongoing examinations with various taxing authorities regarding non-income based tax matters for Fiscal 2013 and prior. The final obligation to these authorities may be subject to either an increase or decrease to the initial estimates recorded. As of December 28, 2013, the Company believes the reserves for these matters are adequately provided for in its consolidated financial statements, the reserves of which are reflected in “Accrued expenses and other current liabilities” in the Company’s consolidated balance sheets.

Credit_Arrangements

Credit Arrangements	12 Months Ended
	Dec. 28, 2013
Debt Disclosure [Abstract]	'
Credit Arrangements	'
	7. Credit Arrangements
	As of December 28, 2013 and as of December 29, 2012, the Company had no outstanding debt.
	Revolving Credit Facility
	The terms of the Revolving Credit Facility were amended on October 11, 2013, to, among other things, extend the maturity date to October 11, 2018. The Company may borrow up to $90.0 million subject to the terms of the facility, with a Company option to increase the facility up to a total of $150.0 million. The availability under the Revolving Credit Facility is subject to a borrowing base calculated on the value of certain accounts receivable from credit card companies as well as the inventory of Industries, Direct, Mariner and Global. The obligations thereunder are secured by a security interest in substantially all of the assets of VSI, Industries, Direct, Mariner and Global. Under the Revolving Credit Facility, VSI has guaranteed the Company’s obligations, and Industries, Direct, Mariner and Global have each guaranteed the obligations of the three respective entities. The Revolving Credit Facility provides for affirmative and negative covenants affecting VSI, Industries, Direct, Mariner and Global. The Revolving Credit Facility restricts, among other things, the Company’s ability to incur indebtedness, create or permit liens on the Company’s assets, declare or pay dividends and make certain other restricted payments, consolidate, merge or recapitalize, sell assets, make certain investments, loans or other advances, enter into transactions with affiliates, change our line of business, and restricts the types of hedging activities the Company can enter into. There were no borrowings under the Revolving Credit Facility during Fiscal 2013.
	Borrowings under the amended Revolving Credit Facility accrue interest, at the Company’s option, at the rate per annum based on an “alternative base rate” plus 0.25% or 0.50% or the adjusted Eurodollar rate plus 1.25% or 1.50%, in each case with the higher spread applicable in the event that the aggregate amount of the borrowings under the amended Revolving Credit Facility exceeds 50% of the borrowing base availability under the Revolving Credit Facility. The unused available line of credit under the Revolving Credit Facility at December 28, 2013 was $89.1 million.
	Senior Notes
	On February 22, 2011, the Company repurchased the remaining $55.1 million of its Second Priority Senior Secured Floating Rate Notes, which resulted in a loss on extinguishment of debt of $0.6 million during February 2011. The weighted average interest rate for interest paid for Fiscal 2011 was 7.79%.
	Term Loan
	On October 25, 2011, the Company paid $18.8 million, representing the remaining principal balance and accrued interest on a term loan, which resulted in a loss on extinguishment of debt of $0.1 million during October 2011. The weighted average interest rate for Fiscal 2011 was 4.00%.
	Interest expense, net for Fiscal 2013, 2012 and 2011 consists of the following (in thousands):
		Fiscal Year Ended
		December 28,			December 29,		December 31,
		2013			2012		2011
	Interest/fees on the revolving credit facility and other interest	$	419		$	401	$	718
	Interest on the Notes		—			—		644
	Interest on the term loan		—			—		601
	Amortization of deferred financing fees		96			258		372
	Interest income		(20	)		—		(10	)
	Interest expense, net	$	495		$	659	$	2,325

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 28, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	8. Income Taxes
	The provision for income taxes for Fiscal 2013, Fiscal 2012 and Fiscal 2011 consists of the following (in thousands):
		Fiscal Year Ended
		December 28,			December 29,			December 31,
		2013			2012			2011
	Current:
	Federal	$	36,070		$	36,776		$	25,099
	State		6,636			7,167			5,387
	Total current		42,706			43,943			30,486
	Deferred:
	Federal		256			(4,881	)		(1,088	)
	State		289			(1,174	)		(388	)
	Total deferred		545			(6,055	)		(1,476	)
	Provision for income taxes	$	43,251		$	37,888		$	29,010
	A reconciliation of the statutory Federal income tax rate and effective rate of the provision for income taxes is as follows:
		Fiscal Year Ended
		December 28,			December 29,			December 31,
		2013			2012			2011
	Federal statutory rate		35	%		35	%		35	%
	State income taxes, net of Federal income tax benefit		4.4	%		4.7	%		4.5	%
	Adjustments for uncertain tax positions		(0.5	)%		(1.9	)%		(0.4	)%
	Other		0.5	%		0.6	%		0.2	%
	Effective tax rate		39.4	%		38.4	%		39.3	%
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying value of assets and liabilities for financial reporting purposes and amounts used for income tax purposes. The temporary differences and carryforwards that give rise to deferred tax assets and liabilities at December 28, 2013 and December 29, 2012 are as follows (in thousands):
		December 28,			December 29,
		2013			2012
	Deferred tax assets:
	Net operating loss carryforward	$	647		$	539
	Deferred rent		11,733			10,501
	Tenant allowance		2,419			1,228
	Deferred sales		4,087			3,827
	General accrued liabilities		2,637			1,543
	Deferred wages and compensation		269			4,770
	Inventory		3,482			2,620
	Equity compensation expense		6,847			4,214
	Other		1,190			2,683
			33,311			31,925
	Valuation allowance		(647	)		(539	)
	Deferred tax assets		32,664			31,386
	Deferred tax liabilities:
	Trade name		(27,594	)		(27,321	)
	Accumulated depreciation		(8,441	)		(7,609	)
	Prepaid expenses		(2,281	)		(1,563	)
	Deferred tax liabilities		(38,316	)		(36,493	)
	Net deferred tax liability	$	(5,652	)	$	(5,107	)
	Amounts recognized in the consolidated balance sheets consist of:
	Deferred tax assets—current	$	5,936		$	7,904
	Deferred tax liabilities—long term		(11,588	)		(13,011	)
	Net deferred tax liability	$	(5,652	)	$	(5,107	)
	Management periodically assesses whether the Company is more likely than not to realize some or all of its deferred tax assets. As of December 28, 2013, with the exception of $0.6 million of deferred tax assets arising from a foreign and state net operating loss carryforward against which there is a valuation allowance (see above table), management determined that the Company is more likely than not to realize the deferred tax assets detailed above. Realization of deferred tax assets associated with the state net operating loss carryforwards is dependent upon generating sufficient taxable income prior to their expiration by tax jurisdiction.
	The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, various state jurisdictions, Puerto Rico and Canada. As of December 28, 2013, the Company has accrued a liability of approximately $0.4 million related to uncertain tax positions, which is included in other long-term liabilities in the consolidated balance sheet. The Company had a net decrease of approximately $5.2 million in Fiscal 2013 related to reversal of its accrual for uncertain tax positions due to a tax accounting method change for certain accrued expenses and a lapse of statutes for certain states of which $0.5 million had an effect on the effective tax rate.
	The total amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate was approximately $0.3 million at December 28, 2013, $0.5 million at December 29, 2012 and $1.9 million at December 31, 2011. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
	Balance at December 25, 2010	$	4,262
	Additions based on tax positions related to the current year		1,126
	Decreases for tax positions of prior years		(1,277	)
	Additions for tax positions of prior years		2,595
	Balance at December 31, 2011	$	6,706
	Additions based on tax positions related to the current year		1,169
	Additions for tax positions of prior years		2,554
	Decreases for tax positions of prior years due to revaluation of positions		(2,554	)
	Decreases for tax positions of prior years due to lapse of statutes		(2,245	)
	Balance at December 29, 2012	$	5,630
	Additions based on tax positions related to the current year		13
Additions for tax positions of prior years		—
Decreases for tax positions of prior years due to revaluation of positions		(4,627	)
Decreases for tax positions of prior years due to lapse of statutes		(612	)
Balance at December 28, 2013	$	404
The Company recognizes interest related to uncertain tax positions in income tax expense. The Company is no longer subject to U.S. federal examinations by tax authorities for years before 2011 and for state examinations before 2007. However, the tax authorities still have the ability to review the relevance of net operating loss carryforwards created in closed years if such tax attributes are utilized in open years (subsequent to 2007).
The Company has domestic (U.S. state) and foreign net operating losses of approximately $1.9 million and $1.7 million at December 28, 2013, against which a full valuation allowance is recorded. Domestic net operating losses generated in the state of New Jersey will continue to expire annually through Fiscal 2030. The Company’s foreign net operating loss is generated through operations in Canada, and will expire in Fiscal 2033.

Stock_Based_Compensation

Stock Based Compensation	12 Months Ended
	Dec. 28, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock Based Compensation	'
	9. Stock Based Compensation
	Equity Incentive Plans- The Company has two equity incentive plans that provide stock based compensation to certain directors, officers, consultants and employees of the Company; the 2006 Stock Option Plan (the “2006 Plan”) and the Vitamin Shoppe 2009 Equity Incentive Plan (the “2009 Plan”), under which the Company has granted stock options (includes non-qualified as well as performance based stock options), restricted shares (includes time based as well as performance based restricted shares) and restricted share units. The issuance of up to 7,453,678 shares of common stock is authorized under these plans. As of December 28, 2013, there were 2,636,373 shares available to grant under both plans. The stock options are exercisable at no less than the fair market value of the underlying shares on the date of grant, and restricted shares and restricted share units are issued at a value not less than the fair market value of the common shares on the date of the grant. Generally, stock options awarded shall become vested in four equal increments on each of the first, second, third and fourth anniversaries of the date on which such equity grants were awarded. Equity awards of restricted shares generally shall become vested between two and four years subsequent to the date on which such equity grants were awarded. However, regarding performance based stock options and performance based restricted shares, vesting is dependent not only on the passage of time, but also on the attainment of certain internal performance metrics. The vesting requirements for performance based stock options and performance based restricted shares permit a catch-up of vesting at the end of the vesting period. Restricted share units generally shall become vested one year subsequent to the date on which such equity grants were awarded. The stock options generally have a maximum term of 10 years. The following table summarizes stock options for the 2006 and 2009 Plans as of December 28, 2013 and changes during Fiscal 2013:
		Number of			Weighted			Weighted			Aggregate
		Options			Average			Average			Intrinsic Value
					Exercise Price			Remaining			(in thousands)
								Contractual
								Life (years)
	Outstanding at December 29, 2012		1,146,385		$	19.8
	Granted		—			—
	Exercised		(190,073	)	$	18.35
	Canceled/forfeited		(17,648	)	$	29.59
	Outstanding at December 28, 2013		938,664		$	19.92			3.97		$	29,629
	Vested or expected to vest at December 28, 2013		891,637		$	19.92			3.97
	Vested and exercisable at December 28, 2013		813,597		$	17.85			3.48		$	27,341
	The total intrinsic value of options exercised during Fiscal 2013, Fiscal 2012 and Fiscal 2011 was $6.1 million, $34.2 million and $10.5 million, respectively. The cash received from options exercised during Fiscal 2013, Fiscal 2012 and Fiscal 2011 was $3.5 million, $11.2 million and $6.1 million, respectively.
	The following table summarizes restricted shares for the 2009 Plan as of December 28, 2013 and changes during Fiscal 2013:
		Number of			Weighted
		Unvested			Average
		Restricted			Grant Date
		Shares			Fair Value
	Unvested at December 29, 2012		275,355		$	38.51
	Granted		162,321		$	48.81
	Vested		(24,706	)	$	18.66
	Canceled/forfeited		(16,610	)	$	41.73
	Unvested at December 28, 2013		396,360		$	43.83
	The following table summarizes restricted share units for the 2009 Plan as of December 28, 2013 and changes during Fiscal 2013:
		Number of			Weighted
		Unvested			Average
		Restricted			Grant Date
		Share			Fair Value
		Units
	Unvested at December 29, 2012		5,265		$	42.73
	Granted		6,414		$	56.08
	Vested		(5,265	)	$	42.73
	Canceled/forfeited		—			—
	Unvested at December 28, 2013		6,414		$	56.08
	Compensation expense attributable to stock-based compensation for Fiscal 2013 was $8.3 million, for Fiscal 2012 was $6.5 million and for Fiscal 2011 was $5.2 million. As of December 28, 2013, the remaining unrecognized stock-based compensation expense for non-vested stock options, restricted shares and restricted share units to be expensed in future periods is $8.6 million, and the related weighted-average period over which it is expected to be recognized is 1.6 years. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company estimates forfeitures based on its historical forfeiture rate since the inception of granting stock based awards. The estimated value of future forfeitures for stock options, restricted shares and restricted share units as of December 28, 2013 is approximately $0.5 million.
	The weighted average grant date fair value of stock options granted was $23.76, $23.20 and $17.56 for Fiscal 2013, Fiscal 2012 and Fiscal 2011, respectively. These valuations represent the fair value of stock options granted during the applicable periods as well as the fair value of subsequent annual tranches of performance based stock option grants. The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:
		Fiscal Year Ended
		December 28,			December 29,			December 31,
		2013			2012			2011
	Expected dividend yield		0	%		0	%		0	%
	Weighted average expected volatility		39	%		44.6	%		49.6	%
	Weighted average risk-free interest rate		0.6	%		1	%		2.5	%
	Expected holding period(s)		4.00 - 4.93 years			4.50 - 6.25 years			3.63 - 6.25 years
	Treasury Stock— As part of the Company’s stock plans, the Company makes required tax payments on behalf of employees as their restricted shares vest. Beginning in the second quarter of Fiscal 2013, the Company withholds the number of vested shares having a value on the date of vesting equal to the tax obligation. The shares withheld are recorded as treasury shares. During Fiscal 2013, the Company purchased 6,316 shares in settlement of employees’ tax obligations for a total of $0.3 million. The Company accounts for treasury stock using the cost method.
	Employee Stock Purchase Plan— Pursuant to the Vitamin Shoppe 2010 Employee Stock Purchase Plan (the “ESPP”), shares of common stock are issued at the end of each calendar quarter (the “Participation Period”) subject to employee participation in the plan. Under the ESPP, participating employees are allowed to purchase shares at 85% of the lower of the market price of the Company’s common stock at either the first or last trading day of the Participation Period. Compensation expense related to the ESPP is based on the estimated fair value of the discount and purchase price offered on the estimated shares to be purchased under the ESPP.

Benefit_Plans

Benefit Plans	12 Months Ended
	Dec. 28, 2013
Postemployment Benefits [Abstract]	'
Benefit Plans	'
	10. Benefit Plans
	The Company sponsors the Vitamin Shoppe Industries, Inc. 401(k) Plan (“401k Plan”). Employees who have completed one month of service are eligible to participate in the 401k Plan. The 401k Plan provides for participant contributions of 1% to 100% of participant compensation into deferred savings, subject to IRS limitations. The 401k Plan provides for Company contributions upon the participant meeting the eligibility requirements. Participants are 100% vested in the Company matching contribution upon receipt. The Company matching contribution is 100% of the first 3% of participant compensation contributed to the 401k Plan and 50% of the next 2% of participant compensation contributed to the 401k Plan. The Company may make discretionary contributions for each 401k Plan year.
	The Company recognized expenses for the 401k Plan of $1.5 million in both Fiscal 2013 and Fiscal 2012 and $1.0 million in Fiscal 2011.
	The Company has a Non-qualified Deferred Compensation Plan (“DC Plan”). The DC Plan allows participants the opportunity to defer pretax amounts up to 75% of base salary and up to 100% of other eligible compensation. The DC Plan is primarily funded by elective contributions made by the participants. The Company has elected to finance any potential DC Plan benefit obligation using corporate owned life insurance policies. The assets of the DC Plan were $2.5 million and $1.6 million at December 28, 2013 and December 29, 2012, respectively, and are included in other long-term assets in the consolidated balance sheets. Accordingly, gains and losses on the underlying investments, which are held in a Rabbi Trust, are recognized in the consolidated statements of income. The liabilities for the DC Plan were $2.6 million and $1.7 million at December 28, 2013 and December 29, 2012, respectively, and are included in other long-term liabilities in the consolidated balance sheets. In December 2013, the Compensation Committee of the Company’s Board of Directors passed a resolution to discontinue and unwind the DC Plan. The termination of the DC Plan is not expected to have a material impact on the Company’s results of operations, financial condition, or cash flows.

Lease_Commitments

Lease Commitments	12 Months Ended
	Dec. 28, 2013
Leases [Abstract]	'
Lease Commitments	'
	11. Lease Commitments
	The Company has non-cancelable operating leases, which expire through 2034. The leases generally contain renewal options for periods ranging from 1 to 10 years and require the Company to pay costs such as real estate taxes and common area maintenance. Contingent rentals are paid based on a percentage of gross sales as defined by lease agreements. The following table provides the net rental expense for all operating leases (in thousands):
			Fiscal Year Ended
			December 28,			December 29,			December 31,
			2013			2012			2011
	Minimum rentals		$	97,332		$	86,178		$	79,710
	Contingent rentals			110			15			141
				97,442			86,193			79,851
	Less: Sublease rentals			(244	)		(248	)		(243	)
	Net rental expense		$	97,198		$	85,945		$	79,608
	The Company recorded charges of $0.4 million and $0.7 million, in Fiscal 2012 and Fiscal 2011, respectively, for lease termination costs related to the closing of one retail location in each period, which is included in selling, general and administrative expenses in the consolidated statements of income.
	As of December 28, 2013, the Company’s lease commitments are as follows (in thousands):
	Fiscal year		Total
			Operating
			Leases (1)
	2014		$	101,604
	2015			94,942
	2016			88,763
	2017			78,607
	2018			64,845
	Thereafter			204,646
			$	633,407
	-1	Store operating leases included in the above table do not include contingent rent based upon sales volume. Operating leases do not include common area maintenance costs or real estate taxes that are paid to the landlord during the year, which combined represented approximately 16.1% of our minimum lease obligations for Fiscal 2013. In addition, not included are variable activity based fees associated with our west coast logistics facility, which were approximately $2.3 million during Fiscal 2013.

Legal_Proceedings

Legal Proceedings	12 Months Ended
	Dec. 28, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Legal Proceedings	'
	12. Legal Proceedings
	The Company is party to various lawsuits arising from time to time in the normal course of business, many of which are covered by insurance. As of December 28, 2013, the Company was not party to any material legal proceedings. Although the impact of the final resolution of these matters on the Company’s financial condition, results of operations or cash flows is not known, management does not believe that the resolution of these lawsuits will have a material adverse effect on the financial condition, results of operations or liquidity of the Company.

Segment_and_Product_Data

Segment and Product Data	12 Months Ended
	Dec. 28, 2013
Segment Reporting [Abstract]	'
Segment and Product Data	'
	13. Segment and Product Data
	The Company currently operates two business segments, retail and direct. The operating segments are segments of the Company for which separate financial information is available and for which operating results are evaluated regularly by executive management in deciding how to allocate resources and in assessing performance. The Company’s management evaluates segment operating results based on several indicators. The primary key performance indicators are sales and operating income for each segment. The table below represents key financial information for each of the Company’s business segments, retail and direct, as well as corporate costs. The retail segment primarily includes the Company’s retail stores. The retail segment generates revenue primarily through the sale of third-party branded and proprietary branded vitamins, minerals, herbs, specialty supplements, sports nutrition and other health and wellness products through Vitamin Shoppe, Super Supplements and Vitapath retail stores primarily in the United States, Puerto Rico and in Canada. The direct segment generates revenue through the sale of third-party branded and proprietary branded vitamins, minerals, herbs, specialty supplements, sports nutrition and other health and wellness products primarily through the Company’s websites and catalog. The Company’s websites at www.vitaminshoppe.com and www.supersup.com offer customers online access to a full assortment of approximately 26,000 SKUs. Corporate costs represent the Company’s administrative expenses which include, but are not limited to: human resources, legal, retail management, direct management, finance, information technology, depreciation and amortization, and various other corporate level activity related expenses. There are no inter-segment sales transactions.
	The Company’s segments are designed to allocate resources internally and provide a framework to determine management responsibility. The Company has allocated $165.3 million and $45.3 million of its recorded goodwill to the retail and direct segments, respectively. The Company does not have identifiable assets separated by segment.
	The following table contains key financial information of the Company’s business segments (in thousands):
			Fiscal Year Ended
			December 28,			December 29,			December 31,
			2013			2012			2011
	Net sales:
	Retail		$	969,610		$	849,765		$	765,925
	Direct			117,859			101,137			90,661
	Net sales			1,087,469			950,902			856,586
	Income from operations:
	Retail			192,439			173,300			147,023
	Direct			21,930			19,588			16,705
	Corporate costs (1)			(104,077	)		(93,516	)		(86,894	)
	Income from operations		$	110,292		$	99,372		$	76,834
	-1	Corporate costs include depreciation and amortization expenses of $28.0 million, $23.1 million and $20.3 million for Fiscal 2013, Fiscal 2012 and Fiscal 2011, respectively. Corporate costs also include expenses related to the acquisition and integration of Super Supplements of $4.3 million for Fiscal 2013 and $1.3 million for Fiscal 2012. Corporate costs were partially offset by insurance recoveries from Super Storm Sandy of $1.1 million for Fiscal 2013.
	The following table represents net merchandise sales by major product category (in thousands):
	Product Category		Fiscal Year Ended
			December 28,			December 29,			December 31,
			2013			2012			2011
	Vitamins, Minerals, Herbs and Homeopathy		$	276,447		$	243,910		$	231,457
	Sports Nutrition			393,659			339,359			283,908
	Specialty Supplements			305,320			274,307			252,779
	Other			109,554			91,109			85,048
	Total			1,084,980			948,685			853,192
	Delivery Revenue			2,489			2,217			3,394
			$	1,087,469		$	950,902		$	856,586
	For each of the last three years, less than 0.5% of our sales have been derived from international sources.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	12 Months Ended
	Dec. 28, 2013
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	14. Fair Value of Financial Instruments
	The fair value hierarchy requires the categorization of assets and liabilities into three levels based upon the assumptions (inputs) used to price the assets or liabilities. Level 1 provides the most reliable measure of fair value, while Level 3 generally requires significant management judgment. The three levels are defined as follows:
		•	Level 1: Unadjusted quoted prices in active markets for identical assets and liabilities.
		•	Level 2: Observable inputs other than those included in Level 1. For example, quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in inactive markets.
		•	Level 3: Unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability.
	The Company’s cash equivalents include approximately $70.1 million in investments such as commercial paper, debt securities and money market funds that are recorded at fair value on a recurring basis. The fair value of these financial instruments is based upon quoted prices in active markets. The Company’s financial instruments also consist of cash and certificates of deposit, accounts receivable, accounts payable and its revolving credit facility, when utilized. The Company believes that the recorded values of its financial instruments approximate their fair values due to their nature and respective durations.

Selected_Quarterly_Financial_I

Selected Quarterly Financial Information	12 Months Ended
	Dec. 28, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Selected Quarterly Financial Information	'
	15. Selected Quarterly Financial Information (unaudited)
	The following table summarizes the Fiscal 2013 and Fiscal 2012 quarterly results (in thousands, except for share data):
		Fiscal Quarter Ended
		March		June		September		December
	Fiscal Year Ended December 28, 2013
	Net sales	$	279,087	$	279,483	$	272,472	$	256,427
	Gross profit		101,642		97,257		93,053		85,694
	Income from operations		34,681		30,584		26,102		18,925
	Net income		20,797		18,262		16,268		11,219
	Net income per common share:
	Basic	$	0.7	$	0.61	$	0.54	$	0.37
	Diluted	$	0.68	$	0.6	$	0.53	$	0.37
	Fiscal Year Ended December 29, 2012
	Net sales	$	248,051	$	244,981	$	238,994	$	218,876
	Gross profit		88,336		85,755		82,500		76,391
	Income from operations		30,429		27,704		24,768		16,471
	Net income		18,261		16,595		16,291		9,678
	Net income per common share:
	Basic	$	0.63	$	0.57	$	0.55	$	0.32
	Diluted	$	0.61	$	0.55	$	0.54	$	0.32
	The Company incurred acquisition and integration costs of approximately $4.3 million in Fiscal 2013 ($2.0 million, $0.9 million, $0.9 million and $0.5 million in the first, second, third and fourth quarters of Fiscal 2013, respectively) related to the acquisition of Super Supplements. In addition, the Company recognized proceeds from insurance recoveries from Super Storm Sandy of approximately $1.1 million in Fiscal 2013 ($0.2 million and $0.9 million in the first and second quarters of Fiscal 2013, respectively).
	In the fourth quarter of Fiscal 2012, the impact of Super Storm Sandy resulted in a reduction of net sales of approximately $3.0 million and the resulting impact on net income was a loss of approximately $1.2 million. In addition, the Company incurred costs of approximately $1.3 million in the fourth quarter of Fiscal 2012 related to the acquisition of Super Supplements which is included in selling, general and administrative expenses in the consolidated statements of income. The Company incurred start up costs of approximately $0.8 million in Fiscal 2012 related to Vitapath Canada Limited of which approximately $0.4 million was incurred in the fourth quarter of Fiscal 2012.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 28, 2013
Accounting Policies [Abstract]	'
Use of Estimates	'
	Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and liabilities at the date of the financial statements, and revenue and expenses during the reporting period. Actual results could differ from those estimates.
Cash and Cash Equivalents	'Cash and Cash Equivalents—Cash and cash equivalents include all highly liquid investments with original maturities of ninety days or less. The Company reclassifies cash overdrafts to accounts payable.
Inventories	'
	Inventories—Inventories, which are comprised solely of finished goods, are stated at the lower of cost or market value. Cost is determined using the weighted average method. Finished goods inventory includes costs on freight on internally transferred merchandise, rent for the distribution centers and costs associated with our buying department and distribution facilities, including payroll which are capitalized into inventory and then expensed as merchandise is sold. In addition, the cost of inventory is reduced by purchase discounts and other allowances received from certain of our vendors. The Company estimates losses for expiring inventory and the net realizable value of inventory based on when a product is close to expiration and not expected to be sold, when a product has reached its expiration date, or when a product is not expected to be saleable. In determining the reserves for these products consideration is given to such factors as the amount of inventory on hand, the remaining shelf life, current and expected market conditions, historical trends and the likelihood of recovering the inventory costs based on anticipated demand. The following table details the activity and balances for the Company’s reserve for expiring inventory for the years ended December 28, 2013, December 29, 2012, and December 31, 2011 (in thousands):
		Balance at		Amounts		Write-Offs			Balance at
		Beginning		Charged to		Against			End of
		of Fiscal Year		Cost of		Reserves			Fiscal Year
				Goods Sold
	Obsolescence Reserves:
	Fiscal Year Ended December 28, 2013	$	1,841.20	$	4,637.90	$	(3,838.8	)	$	2,640.30
	Fiscal Year Ended December 29, 2012		1,785.70		2,957.60		(2,902.1	)		1,841.20
	Fiscal Year Ended December 31, 2011		1,800.70		3,284.00		(3,299.0	)		1,785.70
Property and Equipment, Net	'
	Property and Equipment, Net—Property and equipment, net is stated at cost less accumulated depreciation and amortization. Depreciation and amortization are provided for on a straight-line basis over the estimated useful lives of the related assets. Furniture, fixtures and equipment are generally depreciated over seven years. Leasehold improvements are amortized generally over the shorter of their useful lives or related lease terms. The direct internal and external costs associated with the development of the features and functionality of the Company’s website, transaction processing systems, telecommunications infrastructure and network operations, are capitalized and are amortized on a straight line basis over the estimated useful lives of generally five years. Capitalization of costs begin when the preliminary project stage is completed and management authorizes and commits to funding the computer software project and that it is probable that the project will be completed and the software will be used to perform the function intended. Depreciation of the assets commence when they are put into use. Expenditures for repairs and maintenance are expensed as incurred and expenditures for major renovations and improvements are capitalized. Upon retirement or disposition of property and equipment, the applicable cost and accumulated depreciation are removed from the accounts and any resulting gains or losses are included in the results of operations.
Impairment of Long-Lived Assets	'
	Impairment of Long-Lived Assets—The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets held and used is measured by a comparison of the carrying amount of an asset to undiscounted pre-tax future net cash flows expected to be generated by that asset. If the undiscounted future cash flows are not adequate to recover the carrying value of the asset, an impairment loss is recognized for the amount by which the carrying amount of the assets exceeds the fair value of the assets.
Goodwill and Other Intangibles	'
	Goodwill and Other Intangibles—Goodwill and other indefinite-lived intangibles are not amortized. Evaluations for impairment are performed at least annually, in the fourth quarter of each year, or whenever impairment indicators exist. Goodwill is evaluated for impairment at the reporting unit level (the Company’s operating segments). The evaluation of goodwill and other indefinite-lived intangibles may first consider qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value is less than its carrying value. A quantitative evaluation is performed if the qualitative evaluation results in a more likely than not determination or if a qualitative evaluation is not performed. The Company’s quantitative impairment tests involve calculating the fair value of both reporting units using the discounted cash flow analysis method along with the market multiples method which is used for additional validation of the fair value calculated. These valuation methods require certain assumptions and estimates be made by the Company regarding certain industry trends and future profitability. It is the Company’s policy to conduct goodwill impairment testing from information based on current business projections, which include projected future revenues and cash flows. The cash flows utilized in the discounted cash flow analysis are based on five-year financial forecasts developed internally by management. Cash flows for each reporting unit are discounted using an internally derived weighted average cost of capital which reflects the costs of borrowing for the funding of each unit as well as the risk associated with the units themselves. Also as part of the quantitative test, the Company conducts the test using a 10% decrease in its revenue projections as an additional sensitivity test to ensure the reporting unit’s fair value is greater than its carrying value should events in the future be less favorable than anticipated. If the carrying amount of a reporting unit exceeds its fair value, the Company would compare the implied fair value of the reporting unit goodwill with its carrying value. To compute the implied fair value of goodwill, the Company would assign the fair value of the reporting unit to all of the assets and liabilities of that unit (including any unrecognized intangible assets) as if the reporting unit had been acquired in a business combination. The excess of the fair value of a reporting unit over the amounts assigned to its assets and liabilities is the implied fair value of goodwill. For indefinite-lived tradenames, we utilize the royalty relief method in our quantitative evaluations. To the extent that the implied fair value associated with the goodwill and indefinite-lived intangible assets is less than the recorded value, this would result in a write down of the carrying value of the asset. Impairment tests between annual tests may be undertaken if an event occurs or circumstances change that would reduce the fair value of a reporting unit below its carrying value. The valuation of the goodwill and indefinite-lived intangible assets is affected by, among other things, the Company’s projections for the future and estimated results of future operations. Changes in the business plan or operating results that are different than the estimates used to develop the valuation of the assets may impact these valuations. For those intangible assets which have definite lives, the Company amortizes their cost on a straight-line basis over their estimated useful lives, the periods of which vary based on their particular contractual terms.
	In Fiscal 2013 the Company performed a qualitative analysis and determined that it is more likely than not that the fair values of each of the Company’s reporting units and indefinite-lived tradename is greater than their respective carrying values. In the fourth quarter of Fiscal 2011, the Company recognized an impairment charge of $0.3 million related to one of its tradenames. There have been no other impairment charges related to other intangibles during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
	Insurance Liabilities—Based on the Company’s assessment of risk and cost efficiency, the Company purchases insurance policies to provide for workers’ compensation, general liability, and property losses, as well as directors’ and officers’ liability. The Company self insures its employee medical benefits, up to a certain limit on individual claims. The accruals for claims incurred but not reported amounted to $1.2 million at December 28, 2013 and $0.9 million at December 29, 2012.
Insurance Liabilities	'
	Insurance Liabilities—Based on the Company’s assessment of risk and cost efficiency, the Company purchases insurance policies to provide for workers’ compensation, general liability, and property losses, as well as directors’ and officers’ liability. The Company self insures its employee medical benefits, up to a certain limit on individual claims. The accruals for claims incurred but not reported amounted to $1.2 million at December 28, 2013 and $0.9 million at December 29, 2012.
Rent Expenses, Deferred Rent and Landlord Construction Allowances	'
	Rent Expenses, Deferred Rent and Landlord Construction Allowances—Rent expense and rent incentives, including landlord construction allowances, are recognized on a straight-line basis over the lease term. The Company records rent expense for stores and the distribution center as a component of cost of goods sold. The Company accounts for landlord construction allowances as lease incentives and records them as a component of deferred rent, which is recognized in cost of goods sold over the lease term.
Revenue Recognition	'
	Revenue Recognition—The Company recognizes revenue when merchandise is sold “at point of sale” in retail stores or upon delivery to a direct customer. In addition, shipping fees billed to customers are classified as sales. Amount recognized as shipping revenue during Fiscal 2013, Fiscal 2012, and Fiscal 2011, were $2.5 million, $2.2 million, and $3.4 million, respectively. To arrive at net sales, gross sales are reduced by deferred sales, actual customer returns and a provision for estimated future customer returns, which is based on management’s review of historical and current customer returns. Sales taxes collected from customers are presented on a net basis and as such are excluded from revenue.
Cost of Goods Sold	'
	Cost of Goods Sold—The Company includes the cost of inventory sold, costs of warehousing and distribution and store occupancy costs in cost of goods sold. Warehousing and distribution costs include freight on internally transferred merchandise as well as for shipments to direct customers, rent for the distribution centers and costs associated with our buying department and distribution facilities, including payroll, which are capitalized into inventory and then expensed as merchandise is sold. Store occupancy costs include rent, common area maintenance, real estate taxes and utilities.
Vendor Allowances	'
	Vendor Allowances—Vendor allowances include discounts, allowances and rebates received from vendors and are based on various contract terms. Vendor allowances are recognized as either purchase discounts which represent a reduction of product cost, funding which is capitalized into inventory and recognized in the statement of income as the merchandise is sold, or direct offset which represents funding subject to immediate recognition in the statement of income, depending on the nature of the allowance.
Frequent Buyer Program	'
	Frequent Buyer Program—The Company has a frequent buyer program (“Healthy Awards Program”), whereby customers earn points toward free merchandise based on the dollar volume of purchases. Points are earned each calendar year and must be redeemed within the first three months of the following year or they expire. Sales are deferred at the time points are earned based on the value of points that are projected to be redeemed, which are based on historical redemption data. The Company records a liability for points earned within the current period. This is reported as a reduction of sales with a liability recorded as “Deferred sales” on the consolidated balance sheet.
Store Pre-opening Costs	'
	Store Pre-opening Costs—Costs associated with the opening of new retail stores and start up activities are expensed as incurred.
Advertising Costs	'
	Advertising Costs—The costs of advertising for online marketing arrangements, magazines, direct mail, television and radio are expensed the first time the advertising takes place. Costs associated with the production and distribution of the Company’s catalogs are expensed as incurred. Advertising expense was $16.5 million, $14.7 million and $12.6 million for Fiscal 2013, Fiscal 2012 and Fiscal 2011, respectively.
Online Marketing Arrangements	'
	Online Marketing Arrangements—The Company has entered into online marketing arrangements with various online companies. These agreements are established for periods of 24 months, 12 months or, in some cases, a lesser period and generally provide for compensation based on revenue sharing upon the attainment of stipulated revenue amounts, a percentage of the media expenditure managed by the online partner, or based on the number of visitors that the online company refers to the Company. The Company had no fixed payment commitments during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
Income Taxes	'
	Income Taxes—Deferred income tax assets and liabilities are recorded in accordance with the liability method. Deferred income taxes have been provided for temporary differences between the tax bases and financial reporting bases of the Company’s assets and liabilities using the tax rates and laws in effect for the periods in which the differences are expected to reverse.
	The Company accounts for tax positions based on the provisions of the accounting literature related to accounting for uncertainty in income tax positions. Such literature provides guidance for the recognition threshold and measurement attribute for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. For tax positions that are not more likely than not sustainable upon audit, the Company recognizes the largest amount of the benefit that is more likely than not to be sustained. The Company makes estimates of the potential liability based on our assessment of all potential tax exposures. In addition, the Company uses factors such as applicable tax laws and regulations, current information and past experience with similar issues to make these adjustments. The tax positions are analyzed regularly and adjustments are made as events occur that warrant adjustments for those positions. The Company records interest expense and penalties payable to relevant tax authorities as income tax expense.
Comprehensive Income	'
	Comprehensive Income—Comprehensive income represents net income plus the results of certain non-stockholders’ equity changes not reflected in the statements of income. The amounts recorded in accumulated other comprehensive income at December 28, 2013 and December 29, 2012, primarily represent the value of foreign currency translation adjustments related to the consolidation of Vitapath Canada Limited.
Foreign Currency	'
	Foreign Currency—The local currency is used as the functional currency for Vitapath Canada Limited. We translate assets and liabilities denominated in foreign currency into United States dollars at the current rate of exchange at year end, and translate revenues and expenses at the average exchange rate during the period. Foreign currency translation adjustments are included in other comprehensive income and are reported separately in stockholders’ equity in the consolidated balance sheets.
Concentrations of Credit Risk	'
	Concentrations of Credit Risk—The Company’s customers are consumers who purchase products at the Company’s retail stores, and through the Company’s e-commerce sites and mail-order services. Financial instruments, which potentially subject the Company to concentrations of credit risk, include accounts receivable from credit card processors. As of December 28, 2013, there were no significant concentrations of accounts receivable, or related credit risks. Accounts receivable from credit card processors, included in prepaid expenses and other current assets on the consolidated balance sheets, totaled $7.7 million at December 28, 2013 and $7.4 million at December 29, 2012.
	Glanbia, plc is the only supplier from whom we purchased at least 5% of our merchandise during Fiscal 2013, 2012 and 2011. We purchased approximately 10% of our total merchandise from Glanbia, plc during Fiscal 2013, Fiscal 2012 and Fiscal 2011.
	The Company is subject to concentrations of credit risk associated with cash and cash equivalents, and at times holds cash balances in excess of Federal Deposit Insurance Corporation limits.
Stock-Based Compensation	'
	Stock-Based Compensation—Stock-based compensation cost is measured at the grant date based on the fair value of awards and is recognized as expense over the vesting period, net of anticipated forfeitures. With the exception of restricted shares and restricted share units, determining the fair value of stock-based awards at the grant date requires considerable judgment, including estimating expected volatility, expected term and risk-free rate. The expected volatility is derived from the average volatility of similar actively traded companies over our expected holding periods, as well as the Company’s own volatility, which is weighted to adjust for the shorter trading history. Generally, the expected holding period of non performance based options is calculated using the simplified method using the vesting term of 4 years and the contractual term of 10 years, resulting in a holding period of 6.25 years. Certain limited grants have contractual terms of 7.5 years, and/or shorter vesting periods and as such have calculated holding periods of 4 to 5 years. The Company’s performance based stock option grants vest annually over four years depending on a particular year’s attainment of certain internal financial performance metrics. The target metrics underlying the vesting of performance based stock option grants are established each year. Accordingly, the holding period for performance based stock option grants is calculated using the vesting term of 1 year and the remainder of the contractual term of 10 years, depending on which year of the four year grant is currently vesting; e.g. 25% of the grant vesting in year two of the grant would have a holding period calculated using 1 year and the remaining 9 years of the contractual term. The simplified method was chosen as a means to determine the Company’s holding period as prior to November 2009 there was no historical option exercise experience due to the Company being privately held. As of December 28, 2013, there continues to be insufficient information for purposes of determining a Company specific holding period. The risk-free interest rate is derived from the average yields of zero-coupon U.S. Treasury Strips for the expected holding period of each of the Company’s stock option grants. Compensation expense resulting from the granting of restricted shares and restricted share units is based on the grant date fair value of those common shares and is recognized generally over the two to four year vesting period for restricted shares and over the one year vesting period for restricted share units. For accounting purposes, the expense for performance based stock options and performance based restricted shares is calculated and recorded, based on the determination that the achievement of the pre-established performance targets are probable, over the relevant service period. The vesting requirements for performance based stock options and performance based restricted shares permit a catch-up of vesting at the end of the vesting period.
	The Company previously accounted for stock options under Accounting Principles Bulletin (“APB”) No. 25, “Accounting for Stock Issued to Employees” (“APB No. 25”), using the intrinsic value method. The Financial Accounting Standards Board permits companies to adopt its requirements using various methods. The Company adopted the prospective method for all stock option grants issued prior to December 31, 2005. Subsequent to December 31, 2005, under the prospective method, those nonpublic companies that used the minimum value method of measuring equity share options and similar instruments for either recognition or pro forma disclosure purposes applied the new fair value measurement requirements prospectively to new awards and to awards modified, repurchased, or cancelled after the required effective date. The Company continues to account for any portion of awards outstanding at the date of initial application using the accounting principles originally applied to those awards as allowed by the prospective method. As such, no stock-based compensation costs were reflected in net income for those stock option grants issued prior to the adoption of the provisions of fair value accounting for equity shares, as the Company was not required to do so under the previous guidance nor under the new guidance.
	Expense related to shares purchased under the Company’s Employee Stock Purchase Plan (“ESPP”) is accounted for based on fair value recognition requirements similar to stock options. ESPP participation occurs each calendar quarter (the “Participation Period”) and the expense of which is subject to employee participation in the plan. Under the ESPP, participating employees are allowed to purchase shares at 85% of the lower of the market price of the Company’s common stock at either the first or last trading day of the Participation Period. Compensation expense related to the ESPP is based on the estimated fair value of the discount and purchase price offered on the estimated shares to be purchased under the ESPP. Expense is calculated quarterly, based on the employee contributions made over the applicable three-month Participation Period, using volatility and risk free rates applicable to that three-month period.
Net Income Per Share	'
	Net Income Per Share—The Company’s basic net income per share excludes the dilutive effect of stock options, unvested restricted shares and unvested restricted share units. It is based upon the weighted average number of common shares outstanding during the period divided into net income.
	Diluted net income per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock. Stock options, unvested restricted shares and unvested restricted share units are included as potential dilutive securities for the periods applicable, using the treasury stock method to the extent dilutive.
	The components of the calculation of basic net income per common share and diluted net income per common share are as follows (in thousands except share and per share data):
		Fiscal Year Ended
		December 28,		December 29,		December 31,
		2013		2012		2011
	Numerator:
	Net income available to common stockholders	$	66,546	$	60,825	$	44,864
	Denominator:
	Basic weighted average common shares outstanding		29,992,620		29,473,711		28,802,103
	Effect of dilutive securities:
	Stock options		402,814		545,426		700,785
	Restricted shares		141,573		89,038		53,136
	Restricted share units		4,050		2,062		—
	Diluted weighted average common shares outstanding		30,541,057		30,110,237		29,556,024
	Basic net income per common share	$	2.22	$	2.06	$	1.56
	Diluted net income per common share	$	2.18	$	2.02	$	1.52
	Stock options for the fiscal years ended December 28, 2013, December 29, 2012 and December 31, 2011 for 23,319, 42,305 and 110,460 shares, respectively, have been excluded from the above calculation as they were anti-dilutive.
Reclassifications	'
	Reclassifications—Where appropriate, the Company has reclassified prior years’ financial statements to conform to current year presentation.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements— The Company has considered all new accounting pronouncements and has concluded that there are no new pronouncements that may have a material impact on its results of operations, financial condition, or cash flows, based on current information.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 28, 2013
Calculation of Basic and Diluted Net Income Per Common Share	'
	The components of the calculation of basic net income per common share and diluted net income per common share are as follows (in thousands except share and per share data):
		Fiscal Year Ended
		December 28,		December 29,		December 31,
		2013		2012		2011
	Numerator:
	Net income available to common stockholders	$	66,546	$	60,825	$	44,864
	Denominator:
	Basic weighted average common shares outstanding		29,992,620		29,473,711		28,802,103
	Effect of dilutive securities:
	Stock options		402,814		545,426		700,785
	Restricted shares		141,573		89,038		53,136
	Restricted share units		4,050		2,062		—
	Diluted weighted average common shares outstanding		30,541,057		30,110,237		29,556,024
	Basic net income per common share	$	2.22	$	2.06	$	1.56
	Diluted net income per common share	$	2.18	$	2.02	$	1.52
Obsolescence Reserves [Member]	'
Valuation Allowance and Reserves	'
	The following table details the activity and balances for the Company’s reserve for expiring inventory for the years ended December 28, 2013, December 29, 2012, and December 31, 2011 (in thousands):
		Balance at		Amounts		Write-Offs			Balance at
		Beginning		Charged to		Against			End of
		of Fiscal Year		Cost of		Reserves			Fiscal Year
				Goods Sold
	Obsolescence Reserves:
	Fiscal Year Ended December 28, 2013	$	1,841.20	$	4,637.90	$	(3,838.8	)	$	2,640.30
	Fiscal Year Ended December 29, 2012		1,785.70		2,957.60		(2,902.1	)		1,841.20
	Fiscal Year Ended December 31, 2011		1,800.70		3,284.00		(3,299.0	)		1,785.70

Acquisition_Tables

Acquisition (Tables)	12 Months Ended
	Dec. 28, 2013
Business Combinations [Abstract]	'
Purchase Price of Acquisition Allocated to Net Tangible and Intangible Assets Acquired	'
	The allocation is as follows (in thousands):
	Total consideration transferred	$	50,542
	Less: net identifiable assets acquired:
	Current assets		13,876
	Non-current assets		7,027
	Intangible assets		2,400
	Current liabilities		(5,350	)
	Long-term liabilities		(796	)
	Total net identifiable assets acquired	$	17,157
	Goodwill	$	33,385

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 28, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Schedule of Intangible Assets	'
	The following table discloses the carrying value of all intangible assets (in thousands):
		December 28, 2013						December 29, 2012
		Gross		Accumulated		Net		Gross		Accumulated		Net
		Carrying		Amortization				Carrying		Amortization
		Amount						Amount
	Intangible assets:
	Goodwill	$	210,633	$	—	$	210,633	$	177,248	$	—	$	177,248
	Tradenames - Indefinite-lived		68,405		—		68,405		68,405		—		68,405
	Tradenames - Definite-lived		3,562		785		2,777		514		10		504
	Intangibles related to asset purchase		2,950		2,868		82		3,000		2,793		207
		$	285,550	$	3,653	$	281,897	$	249,167	$	2,803	$	246,364
Expected Amortization Expense on Definite-Lived Intangible Assets	'
	The expected amortization expense on definite-lived intangible assets on the Company’s consolidated balance sheet at December 28, 2013, is as follows (in thousands):
	Fiscal 2014	$	997
	Fiscal 2015		915
	Fiscal 2016		215
	Fiscal 2017		115
	Fiscal 2018		115
	Thereafter		502
		$	2,859

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 28, 2013
Property Plant And Equipment [Abstract]	'
Components of Property and Equipment	'
	Property and equipment consists of the following (in thousands):
		December 28,			December 29,
		2013			2012
	Leasehold improvements	$	141,842		$	122,061
	Furniture, fixtures and equipment		135,921			108,429
	Software		42,911			37,063
			320,674			267,553
	Less: accumulated depreciation and amortization		(207,928	)		(182,173	)
	Subtotal		112,746			85,380
	Construction in progress		7,396			10,021
		$	120,142		$	95,401

Accrued_Expenses_and_Other_Cur1

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 28, 2013
Payables And Accruals [Abstract]	'
Accrued Expenses and Other Current Liabilities	'
	Accrued expenses and other current liabilities consist of the following (in thousands):
		December 28,		December 29,
		2013		2012
	Accrued salaries and related expenses	$	9,940	$	14,985
	Sales tax payable and related expenses		6,334		5,642
	Accrued fixed asset additions		6,286		4,624
	Other accrued expenses		19,466		19,276
		$	42,026	$	44,527

Credit_Arrangements_Tables

Credit Arrangements (Tables)	12 Months Ended
	Dec. 28, 2013
Debt Disclosure [Abstract]	'
Interest Expense, Net	'
	Interest expense, net for Fiscal 2013, 2012 and 2011 consists of the following (in thousands):
		Fiscal Year Ended
		December 28,			December 29,		December 31,
		2013			2012		2011
	Interest/fees on the revolving credit facility and other interest	$	419		$	401	$	718
	Interest on the Notes		—			—		644
	Interest on the term loan		—			—		601
	Amortization of deferred financing fees		96			258		372
	Interest income		(20	)		—		(10	)
	Interest expense, net	$	495		$	659	$	2,325

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 28, 2013
Income Tax Disclosure [Abstract]	'
Provision for Income Taxes	'
	The provision for income taxes for Fiscal 2013, Fiscal 2012 and Fiscal 2011 consists of the following (in thousands):
		Fiscal Year Ended
		December 28,			December 29,			December 31,
		2013			2012			2011
	Current:
	Federal	$	36,070		$	36,776		$	25,099
	State		6,636			7,167			5,387
	Total current		42,706			43,943			30,486
	Deferred:
	Federal		256			(4,881	)		(1,088	)
	State		289			(1,174	)		(388	)
	Total deferred		545			(6,055	)		(1,476	)
	Provision for income taxes	$	43,251		$	37,888		$	29,010
Reconciliation of Provision for Income Taxes	'
	A reconciliation of the statutory Federal income tax rate and effective rate of the provision for income taxes is as follows:
		Fiscal Year Ended
		December 28,			December 29,			December 31,
		2013			2012			2011
	Federal statutory rate		35	%		35	%		35	%
	State income taxes, net of Federal income tax benefit		4.4	%		4.7	%		4.5	%
	Adjustments for uncertain tax positions		(0.5	)%		(1.9	)%		(0.4	)%
	Other		0.5	%		0.6	%		0.2	%
	Effective tax rate		39.4	%		38.4	%		39.3	%
Deferred Tax Assets and Liabilities	'
	The temporary differences and carryforwards that give rise to deferred tax assets and liabilities at December 28, 2013 and December 29, 2012 are as follows (in thousands):
		December 28,			December 29,
		2013			2012
	Deferred tax assets:
	Net operating loss carryforward	$	647		$	539
	Deferred rent		11,733			10,501
	Tenant allowance		2,419			1,228
	Deferred sales		4,087			3,827
	General accrued liabilities		2,637			1,543
	Deferred wages and compensation		269			4,770
	Inventory		3,482			2,620
	Equity compensation expense		6,847			4,214
	Other		1,190			2,683
			33,311			31,925
	Valuation allowance		(647	)		(539	)
	Deferred tax assets		32,664			31,386
	Deferred tax liabilities:
	Trade name		(27,594	)		(27,321	)
	Accumulated depreciation		(8,441	)		(7,609	)
	Prepaid expenses		(2,281	)		(1,563	)
	Deferred tax liabilities		(38,316	)		(36,493	)
	Net deferred tax liability	$	(5,652	)	$	(5,107	)
	Amounts recognized in the consolidated balance sheets consist of:
	Deferred tax assets—current	$	5,936		$	7,904
	Deferred tax liabilities—long term		(11,588	)		(13,011	)
	Net deferred tax liability	$	(5,652	)	$	(5,107	)
Unrecognized Tax Benefits	'
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
	Balance at December 25, 2010	$	4,262
	Additions based on tax positions related to the current year		1,126
	Decreases for tax positions of prior years		(1,277	)
	Additions for tax positions of prior years		2,595
	Balance at December 31, 2011	$	6,706
	Additions based on tax positions related to the current year		1,169
	Additions for tax positions of prior years		2,554
	Decreases for tax positions of prior years due to revaluation of positions		(2,554	)
	Decreases for tax positions of prior years due to lapse of statutes		(2,245	)
	Balance at December 29, 2012	$	5,630
	Additions based on tax positions related to the current year		13
	Additions for tax positions of prior years		—
	Decreases for tax positions of prior years due to revaluation of positions		(4,627	)
	Decreases for tax positions of prior years due to lapse of statutes		(612	)
	Balance at December 28, 2013	$	404

Stock_Based_Compensation_Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 28, 2013
Summary of Stock Options	'
	The following table summarizes stock options for the 2006 and 2009 Plans as of December 28, 2013 and changes during Fiscal 2013:
		Number of			Weighted			Weighted			Aggregate
		Options			Average			Average			Intrinsic Value
					Exercise Price			Remaining			(in thousands)
								Contractual
								Life (years)
	Outstanding at December 29, 2012		1,146,385		$	19.8
	Granted		—			—
	Exercised		(190,073	)	$	18.35
	Canceled/forfeited		(17,648	)	$	29.59
	Outstanding at December 28, 2013		938,664		$	19.92			3.97		$	29,629
	Vested or expected to vest at December 28, 2013		891,637		$	19.92			3.97
	Vested and exercisable at December 28, 2013		813,597		$	17.85			3.48		$	27,341
Summary of Fair Value Option Grant Using Black-Scholes Option-Pricing Model	'
	The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:
		Fiscal Year Ended
		December 28,			December 29,			December 31,
		2013			2012			2011
	Expected dividend yield		0	%		0	%		0	%
	Weighted average expected volatility		39	%		44.6	%		49.6	%
	Weighted average risk-free interest rate		0.6	%		1	%		2.5	%
	Expected holding period(s)		4.00 - 4.93 years			4.50 - 6.25 years			3.63 - 6.25 years
Restricted Shares [Member]	'
Summary of Restricted Shares	'
	The following table summarizes restricted shares for the 2009 Plan as of December 28, 2013 and changes during Fiscal 2013:
		Number of Unvested			Weighted
		Restricted Shares			Average Grant
					Date Fair Value
	Unvested at December 29, 2012		275,355		$	38.51
	Granted		162,321		$	48.81
	Vested		(24,706	)	$	18.66
	Canceled/forfeited		(16,610	)	$	41.73
	Unvested at December 28, 2013		396,360		$	43.83
Restricted Share Units [Member]	'
Summary of Restricted Shares	'
	The following table summarizes restricted share units for the 2009 Plan as of December 28, 2013 and changes during Fiscal 2013:
		Number of			Weighted
		Unvested			Average
		Restricted			Grant Date
		Share			Fair Value
		Units
	Unvested at December 29, 2012		5,265		$	42.73
	Granted		6,414		$	56.08
	Vested		(5,265	)	$	42.73
	Canceled/forfeited		—			—
	Unvested at December 28, 2013		6,414		$	56.08

Lease_Commitments_Tables

Lease Commitments (Tables)	12 Months Ended
	Dec. 28, 2013
Leases [Abstract]	'
Net Rent Expenses	'
	The following table provides the net rental expense for all operating leases (in thousands):
			Fiscal Year Ended
			December 28,			December 29,			December 31,
			2013			2012			2011
	Minimum rentals		$	97,332		$	86,178		$	79,710
	Contingent rentals			110			15			141
				97,442			86,193			79,851
	Less: Sublease rentals			(244	)		(248	)		(243	)
	Net rental expense		$	97,198		$	85,945		$	79,608
Lease Commitments	'
	As of December 28, 2013, the Company’s lease commitments are as follows (in thousands):
	Fiscal year		Total
			Operating
			Leases (1)
	2014		$	101,604
	2015			94,942
	2016			88,763
	2017			78,607
	2018			64,845
	Thereafter			204,646
			$	633,407
	-1	Store operating leases included in the above table do not include contingent rent based upon sales volume. Operating leases do not include common area maintenance costs or real estate taxes that are paid to the landlord during the year, which combined represented approximately 16.1% of our minimum lease obligations for Fiscal 2013. In addition, not included are variable activity based fees associated with our west coast logistics facility, which were approximately $2.3 million during Fiscal 2013.

Segment_and_Product_Data_Table

Segment and Product Data (Tables)	12 Months Ended
	Dec. 28, 2013
Segment Reporting [Abstract]	'
Table of Key Financial Information of Company's Business Segments	'
	The following table contains key financial information of the Company’s business segments (in thousands):
			Fiscal Year Ended
			December 28,			December 29,			December 31,
			2013			2012			2011
	Net sales:
	Retail		$	969,610		$	849,765		$	765,925
	Direct			117,859			101,137			90,661
	Net sales			1,087,469			950,902			856,586
	Income from operations:
	Retail			192,439			173,300			147,023
	Direct			21,930			19,588			16,705
	Corporate costs (1)			(104,077	)		(93,516	)		(86,894	)
	Income from operations		$	110,292		$	99,372		$	76,834
	-1	Corporate costs include depreciation and amortization expenses of $28.0 million, $23.1 million and $20.3 million for Fiscal 2013, Fiscal 2012 and Fiscal 2011, respectively. Corporate costs also include expenses related to the acquisition and integration of Super Supplements of $4.3 million for Fiscal 2013 and $1.3 million for Fiscal 2012. Corporate costs were partially offset by insurance recoveries from Super Storm Sandy of $1.1 million for Fiscal 2013.
Net Merchandise Sales by Major Product Category	'
	The following table represents net merchandise sales by major product category (in thousands):
	Product Category		Fiscal Year Ended
			December 28,			December 29,			December 31,
			2013			2012			2011
	Vitamins, Minerals, Herbs and Homeopathy		$	276,447		$	243,910		$	231,457
	Sports Nutrition			393,659			339,359			283,908
	Specialty Supplements			305,320			274,307			252,779
	Other			109,554			91,109			85,048
	Total			1,084,980			948,685			853,192
	Delivery Revenue			2,489			2,217			3,394
			$	1,087,469		$	950,902		$	856,586

Selected_Quarterly_Financial_I1

Selected Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 28, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Summary of Quarterly Financial Information	'
	The following table summarizes the Fiscal 2013 and Fiscal 2012 quarterly results (in thousands, except for share data):
		Fiscal Quarter Ended
		March		June		September		December
	Fiscal Year Ended December 28, 2013
	Net sales	$	279,087	$	279,483	$	272,472	$	256,427
	Gross profit		101,642		97,257		93,053		85,694
	Income from operations		34,681		30,584		26,102		18,925
	Net income		20,797		18,262		16,268		11,219
	Net income per common share:
	Basic	$	0.7	$	0.61	$	0.54	$	0.37
	Diluted	$	0.68	$	0.6	$	0.53	$	0.37
	Fiscal Year Ended December 29, 2012
	Net sales	$	248,051	$	244,981	$	238,994	$	218,876
	Gross profit		88,336		85,755		82,500		76,391
	Income from operations		30,429		27,704		24,768		16,471
	Net income		18,261		16,595		16,291		9,678
	Net income per common share:
	Basic	$	0.63	$	0.57	$	0.55	$	0.32
	Diluted	$	0.61	$	0.55	$	0.54	$	0.32

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail) (Super Supplements [Member], USD $)	0 Months Ended
In Millions, unless otherwise specified	Feb. 14, 2013
	Retail_Locations
Basis Of Presentation [Line Items]	'
Number of retail locations in Washington, Oregon and Idaho	31
Purchase price, cash paid	$50.50
Seattle Washington [Member]	'
Basis Of Presentation [Line Items]	'
Number of distribution centers	1
Washington [Member]	'
Basis Of Presentation [Line Items]	'
Number of e-commerce business	1

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Valuation Allowance and Obsolescence Reserves (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Obsolescence Reserves [Abstract]	'	'	'
Balance at Beginning of Fiscal Year	$1,841,200	$1,785,700	$1,800,700
Amounts Charged to Cost of Goods Sold	4,637,900	2,957,600	3,284,000
Write-Offs Against Reserves	-3,838,800	-2,902,100	-3,299,000
Balance at End of Fiscal Year	$2,640,300	$1,841,200	$1,785,700

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Percentage decrease in revenue projections accounting for unfavorable events	'	10.00%	'	'
Impairments charges of indefinite-lived tradenames	$0.30	'	'	'
Impairment charges on other intangibles	'	0	0	0
Accruals for claims incurred	'	1.2	0.9	'
Amounts recognized as shipping revenue	'	2.5	2.2	3.4
Advertising expense	'	16.5	14.7	12.6
Fixed payment commitments	0	0	0	0
Accounts receivable from credit card processors	'	$7.70	$7.40	'
Contractual term of options, years	'	'3 years 5 months 23 days	'	'
Anti-dilutive stock options excluded from computation of earnings per share	'	23,319	42,305	110,460
Supplier Concentration Risk [Member] | Glanbia, Plc [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Minimum required percentage of concentration risk	'	10.00%	10.00%	10.00%
Furniture Fixtures and Equipment [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Estimated useful life of asset, years	'	'7 years	'	'
Other Capitalized Property Plant and Equipment [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Estimated useful life of asset, years	'	'5 years	'	'
Non Performance Based Options [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Vesting term of options, years	'	'4 years	'	'
Contractual term of options, years	'	'10 years	'	'
Holding period of share-based options, years	'	'6 years 3 months 18 days	'	'
Limited grants [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Contractual term of options, years	'	'7 years 6 months	'	'
Employee Stock Purchase Plan [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Percentage of the lower market price of shares at which participating ESPP employees can purchase	'	85.00%	'	'
Participation period for calculation of compensation expense related to ESPP	'	'3 months	'	'
Restricted Share Units [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Vesting term of options, years	'	'1 year	'	'
Performance Based Options [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Vesting term of options, years	'	'1 year	'	'
Contractual term of options, years	'	'10 years	'	'
Minimum [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Holding period of share-based options, years	'	'4 years	'4 years 6 months	'3 years 7 months 17 days
Minimum [Member] | Supplier Concentration Risk [Member] | Glanbia, Plc [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Minimum required percentage of concentration risk	'	5.00%	5.00%	5.00%
Minimum [Member] | Limited grants [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Holding period of share-based options, years	'	'4 years	'	'
Minimum [Member] | Restricted Shares [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Vesting term of options, years	'	'2 years	'	'
Maximum [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Holding period of share-based options, years	'	'4 years 11 months 5 days	'6 years 3 months	'6 years 3 months
Maximum [Member] | Limited grants [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Holding period of share-based options, years	'	'5 years	'	'
Maximum [Member] | Restricted Shares [Member]	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'
Vesting term of options, years	'	'4 years	'	'

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Calculation of Basic and Diluted Net Income Per Common Share (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net income available to common stockholders	'	'	'	'	'	'	'	'	$66,546	$60,825	$44,864
Basic weighted average common shares outstanding	'	'	'	'	'	'	'	'	29,992,620	29,473,711	28,802,103
Diluted weighted average common shares outstanding	'	'	'	'	'	'	'	'	30,541,057	30,110,237	29,556,024
Basic net income per common share	$0.37	$0.54	$0.61	$0.70	$0.32	$0.55	$0.57	$0.63	$2.22	$2.06	$1.56
Diluted net income per common share	$0.37	$0.53	$0.60	$0.68	$0.32	$0.54	$0.55	$0.61	$2.18	$2.02	$1.52
Stock Options [Member]	'	'	'	'	'	'	'	'	'	'	'
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Effect of dilutive securities	'	'	'	'	'	'	'	'	402,814	545,426	700,785
Restricted Shares [Member]	'	'	'	'	'	'	'	'	'	'	'
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Effect of dilutive securities	'	'	'	'	'	'	'	'	141,573	89,038	53,136
Restricted Share Units [Member]	'	'	'	'	'	'	'	'	'	'	'
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Effect of dilutive securities	'	'	'	'	'	'	'	'	4,050	2,062	'

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (USD $)

10 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

Dec. 28, 2013

Dec. 28, 2013

Feb. 14, 2013

Dec. 29, 2012

Dec. 28, 2013

Dec. 28, 2013

Dec. 28, 2013

Feb. 14, 2013

Dec. 28, 2013

Sep. 28, 2013

Jun. 29, 2013

Mar. 30, 2013

Dec. 28, 2013

Feb. 14, 2013

Feb. 14, 2013

Tradename [Member]

Minimum [Member]

Maximum [Member]

Super Supplements [Member]

Super Supplements [Member]

Super Supplements [Member]

Super Supplements [Member]

Super Supplements [Member]

Super Supplements [Member]

Super Supplements [Member]

Super Supplements [Member]

Retail_Locations

Seattle Washington [Member]

Washington [Member]

Distributors

Business

Business Combination Transactions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of retail locations in Washington, Oregon and Idaho

'

'

'

'

'

'

'

31

'

'

'

'

'

'

'

Number of distribution centers

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

Number of e-commerce business

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

Purchase price, cash paid

'

'

'

'

'

'

'

$50,500,000

'

'

'

'

'

'

'

Acquisition and integration costs

'

4,300,000

'

'

'

'

'

'

500,000

900,000

900,000

2,000,000

4,300,000

'

'

Intangible assets trade name and favorable lease

'

'

2,400,000

'

2,400,000

'

'

'

'

'

'

'

'

'

'

Estimated useful life period of tradename

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

Long-term liabilities includes unfavorable leases

800,000

800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Unfavorable lease amortization period

'

'

'

'

'

'2 years

'9 years

'

'

'

'

'

'

'

'

Goodwill

210,633,000

210,633,000

33,385,000

177,248,000

'

'

'

'

'

'

'

'

'

'

'

Net sales

66,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

$3,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition_Purchase_Price_of_

Acquisition - Purchase Price of Acquisition Allocated to Net Tangible and Intangible Assets Acquired (Detail) (USD $)	Dec. 28, 2013	Feb. 14, 2013	Dec. 29, 2012
In Thousands, unless otherwise specified
Business Combinations [Abstract]	'	'	'
Total consideration transferred	'	$50,542	'
Less: net identifiable assets acquired:	'	'	'
Current assets	'	13,876	'
Non-current assets	'	7,027	'
Intangible assets	'	2,400	'
Current liabilities	'	-5,350	'
Long-term liabilities	'	-796	'
Total net identifiable assets acquired	'	17,157	'
Goodwill	$210,633	$33,385	$177,248

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) (USD $)	Dec. 28, 2013	Feb. 14, 2013	Dec. 29, 2012
In Thousands, unless otherwise specified
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'
Intangible Assets, Goodwill, Gross Carrying Amount	$210,633	'	$177,248
Intangible Assets, Goodwill, Accumulated Amortization	'	'	'
Intangible Assets, Goodwill, Net	210,633	33,385	177,248
Intangible Assets, Gross (including Goodwill)	285,550	'	249,167
Intangible Assets, Definite-Lived, Accumulated Amortization	3,653	'	2,803
Goodwill and Intangible Assets, Net	281,897	'	246,364
Finite-Lived Intangible Assets, Amortization Expense	2,859	'	'
Intangible Assets, Net	71,264	'	69,116
Intangibles Related to Asset Purchase [Member]	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'
Intangible Assets, Definite-Lived, Gross Carrying Amount	2,950	'	3,000
Intangible Assets, Definite-Lived, Accumulated Amortization	2,868	'	2,793
Intangible Assets, Net	82	'	207
Tradename [Member]	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'
Intangible Assets, Tradenames-Indefinite-Lived, Carrying Amount	68,405	'	68,405
Intangible Assets, Definite-Lived, Gross Carrying Amount	3,562	'	514
Intangible Assets, Definite-Lived, Accumulated Amortization	785	'	10
Finite-Lived Intangible Assets, Amortization Expense	$2,777	'	$504

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Goodwill And Intangible Assets [Line Items]	'	'	'	'
Intangible assets amortization expense	'	$0.90	$0.10	$0.50
Other impairment charges related to goodwill or other intangibles	'	0	0	0
Impairment charges of indefinite-lived tradenames	$0.30	'	'	'
Minimum [Member]	'	'	'	'
Goodwill And Intangible Assets [Line Items]	'	'	'	'
Useful lives of definite-lived intangible assets, years	'	'3 years	'	'
Maximum [Member]	'	'	'	'
Goodwill And Intangible Assets [Line Items]	'	'	'	'
Useful lives of definite-lived intangible assets, years	'	'15 years	'	'

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Expected Amortization Expense on Definite-Lived Intangible Assets (Detail) (USD $)	Dec. 28, 2013
In Thousands, unless otherwise specified
Finite Lived Intangible Assets Future Amortization Expense [Abstract]	'
Fiscal 2014	$997
Fiscal 2015	915
Fiscal 2016	215
Fiscal 2017	115
Fiscal 2018	115
Thereafter	502
Finite-Lived Intangible Assets, Amortization Expense	$2,859

Property_and_Equipment_Compone

Property and Equipment - Components of Property and Equipment (Detail) (USD $)	Dec. 28, 2013	Dec. 29, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	$320,674	$267,553
Less: accumulated depreciation and amortization	-207,928	-182,173
Subtotal	112,746	85,380
Property and equipment, net	120,142	95,401
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	141,842	122,061
Furniture Fixtures and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	135,921	108,429
Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	42,911	37,063
Construction in Progress [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, net	$7,396	$10,021

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
		Location	Location
Property, Plant and Equipment [Line Items]	'	'	'
Depreciation and amortization	$27,100,000	$22,900,000	$19,800,000
Number of underperforming retail locations	'	3	3
Property and equipment, net	120,142,000	95,401,000	'
Net of accumulated amortization	207,928,000	182,173,000	'
Assets Held under Capital Leases [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property and equipment, net	600,000	1,100,000	'
Net of accumulated amortization	5,200,000	4,400,000	'
Property, Plant and Equipment [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Impairment charges on fixed assets	'	$700,000	$900,000

Accrued_Expenses_and_Other_Cur2

Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Dec. 28, 2013	Dec. 29, 2012
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Accrued salaries and related expenses	$9,940	$14,985
Sales tax payable and related expenses	6,334	5,642
Accrued fixed asset additions	6,286	4,624
Other accrued expenses	19,466	19,276
Accrued expenses and other current liabilities	$42,026	$44,527

Credit_Arrangements_Additional

Credit Arrangements - Additional Information (Detail) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

Oct. 25, 2011

Dec. 31, 2011

Dec. 28, 2013

Dec. 29, 2012

Feb. 22, 2011

Dec. 28, 2013

Dec. 28, 2013

Dec. 28, 2013

Dec. 28, 2013

Dec. 28, 2013

Dec. 28, 2013

Feb. 28, 2011

Dec. 31, 2011

Oct. 31, 2011

2009 Revolving Credit Facility [Member]

2009 Revolving Credit Facility [Member]

2009 Revolving Credit Facility [Member]

2009 Revolving Credit Facility [Member]

2009 Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Notes [Member]

Notes [Member]

Term Loan [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Alternate Base Rate [Member]

Adjusted Eurodollar Rate [Member]

Alternate Base Rate [Member]

Adjusted Eurodollar Rate [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding debt

'

'

$0

$0

'

'

'

'

'

'

'

'

'

'

Revolving credit facility, current borrowing capacity

'

'

'

'

'

90,000,000

'

'

'

'

'

'

'

'

Revolving credit facility, maximum borrowing capacity

'

'

'

'

'

150,000,000

'

'

'

'

'

'

'

'

Revolving credit facility, extended maturity date

'

'

'

'

'

11-Oct-18

'

'

'

'

'

'

'

'

Borrowings under revolving credit facility

'

'

'

'

'

'

'

'

'

'

0

'

'

'

Revolving credit facility, interest rate description

'

'

'

'

'

'Borrowings under the amended Revolving Credit Facility accrue interest, at the Company's option, at the rate per annum based on an "alternative base rate" plus 0.25% or 0.50% or the adjusted Eurodollar rate plus 1.25% or 1.50%, in each case with the higher spread applicable in the event that the aggregate amount of the borrowings under the amended Revolving Credit Facility exceeds 50% of the borrowing base availability under the Revolving Credit Facility.

'

'

'

'

'

'

'

'

Percentage of aggregate borrowing facility limit

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

Variable interest rate, basis spread

'

'

'

'

'

'

0.25%

1.25%

0.50%

1.50%

'

'

'

'

Revolving credit facility, unused available credit

'

'

'

'

'

89,100,000

'

'

'

'

'

'

'

'

Senior secured notes repurchased

'

'

'

'

55,100,000

'

'

'

'

'

'

'

'

'

Loss on extinguishment of debt

'

635,000

'

'

'

'

'

'

'

'

'

600,000

'

100,000

Weighted average interest rate

'

'

'

'

'

'

'

'

'

'

'

'

7.79%

4.00%

Debt instrument principal balance and accrued interest paid

$18,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit_Arrangements_Interest_E

Credit Arrangements - Interest Expense, Net (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Interest Expense [Line Items]	'	'	'
Amortization of deferred financing fees	$96	$258	$372
Interest income	-20	'	-10
Interest expense, net	495	659	2,325
Revolving Credit Facility [Member]	'	'	'
Interest Expense [Line Items]	'	'	'
Interest expense	419	401	718
Notes [Member]	'	'	'
Interest Expense [Line Items]	'	'	'
Interest expense	'	'	644
Term Loan [Member]	'	'	'
Interest Expense [Line Items]	'	'	'
Interest expense	'	'	$601

Income_Taxes_Provision_for_Inc

Income Taxes - Provision for Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Current:	'	'	'
Current, Federal	$36,070	$36,776	$25,099
Current, State	6,636	7,167	5,387
Total current	42,706	43,943	30,486
Deferred:	'	'	'
Deferred, Federal	256	-4,881	-1,088
Deferred, State	289	-1,174	-388
Total deferred	545	-6,055	-1,476
Provision for income taxes	$43,251	$37,888	$29,010

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Provision for Income Taxes (Detail)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of Federal income tax benefit	4.40%	4.70%	4.50%
Adjustments for uncertain tax positions	-0.50%	-1.90%	-0.40%
Other	0.50%	0.60%	0.20%
Effective tax rate	39.40%	38.40%	39.30%

Income_Taxes_Deferred_Tax_Asse

Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 28, 2013	Dec. 29, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Net operating loss carryforward	$647	$539
Deferred rent	11,733	10,501
Tenant allowance	2,419	1,228
Deferred sales	4,087	3,827
General accrued liabilities	2,637	1,543
Deferred wages and compensation	269	4,770
Inventory	3,482	2,620
Equity compensation expense	6,847	4,214
Other	1,190	2,683
Deferred tax assets	33,311	31,925
Valuation allowance	-647	-539
Deferred tax assets	32,664	31,386
Deferred tax liabilities:	'	'
Trade name	-27,594	-27,321
Accumulated depreciation	-8,441	-7,609
Prepaid expenses	-2,281	-1,563
Deferred tax liabilities	-38,316	-36,493
Net deferred tax liability	-5,652	-5,107
Amounts recognized in the consolidated balance sheets consist of:	'	'
Deferred tax assets-current	5,936	7,904
Deferred tax liabilities-long term	-11,588	-13,011
Net deferred tax liability	($5,652)	($5,107)

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Schedule Of Income Taxes [Line Items]	'	'	'
Deferred tax assets, operating loss carryforwards	$647,000	$539,000	'
Liability for uncertain tax positions	400,000	'	'
Expected decreases of tax positions for current year	5,200,000	'	'
Effective tax amount	500,000	'	'
Unrecognized tax benefits that would impact effective tax rate	300,000	500,000	1,900,000
Domestic (U.S. state) [Member]	'	'	'
Schedule Of Income Taxes [Line Items]	'	'	'
Net operating loss	1,900,000	'	'
Net operating loss, expiration year	'2030	'	'
Foreign (Canada) [Member]	'	'	'
Schedule Of Income Taxes [Line Items]	'	'	'
Net operating loss	$1,700,000	'	'
Net operating loss, expiration year	'2033	'	'

Income_Taxes_Unrecognized_Tax_

Income Taxes - Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Unrecognized tax benefits, beginning balance	$5,630	$6,706	$4,262
Additions based on tax positions related to the current year	13	1,169	1,126
Decreases for tax positions of prior years	-4,627	-2,554	-1,277
Additions for tax positions of prior years	'	2,554	2,595
Decreases for tax positions of prior years due to lapse of statutes	-612	-2,245	'
Unrecognized tax benefits, ending balance	$404	$5,630	$6,706

Stock_Based_Compensation_Addit

Stock Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
	Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number of equity incentive plan	2	'	'
Stock option awarded become vested increments	'Generally, stock options awarded shall become vested in four equal increments on each of the first, second, third and fourth anniversaries of the date on which such equity grants were awarded.	'	'
Intrinsic value of options exercised	$6.10	$34.20	$10.50
Cash received from options exercised	3.5	11.2	6.1
Compensation expense attributable to stock-based compensation	8.3	6.5	5.2
Unrecognized stock-based compensation expense for non-vested stock options, restricted shares and restricted shares units	8.6	'	'
Recognition period for non-vested stock options, restricted shares and restricted shares units	'1 year 7 months 6 days	'	'
Estimated value of future forfeitures for equity grants	0.5	'	'
Weighted-average grant date fair value for grants	$23.76	$23.20	$17.56
Stock purchased during period, shares	6,316	'	'
Stock purchased during period, value	$0.30	'	'
Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Contractual term of options, years	'10 years	'	'
Restricted Shares [Member] | Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting term of awards	'2 years	'	'
Restricted Shares [Member] | Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting term of awards	'4 years	'	'
Performance Based Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting term of awards	'1 year	'	'
2006 and 2009 Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Common stock, shares authorized	7,453,678	'	'
Shares available to grant under both plans	2,636,373	'	'
Employee Stock Purchase Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Percentage of the lower market price of shares at which participating ESPP employees can purchase	85.00%	'	'

Stock_Based_Compensation_Summa

Stock Based Compensation - Summary of Stock Options (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 28, 2013
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest [Abstract]	'
Outstanding at December 29, 2012, Number of Options	1,146,385
Granted, Number of Options	'
Exercised, Number of Options	-190,073
Canceled/forfeited, Number of Options	-17,648
Outstanding at December 28, 2013, Number of Options	938,664
Vested or expected to vest at December 28, 2013, Number of Options	891,637
Vested and exercisable at December 28, 2013, Number of Options	813,597
Outstanding at December 29, 2012, Weighted Average Exercise Price	$19.80
Granted, Weighted Average Exercise Price	'
Exercised, Weighted Average Exercise Price	$18.35
Canceled/forfeited, Weighted Average Exercise Price	$29.59
Outstanding at December 28, 2013, Weighted Average Exercise Price	$19.92
Vested or expected to vest at December 28, 2013, Weighted Average Exercise Price	$19.92
Vested and exercisable at December 28, 2013, Weighted Average Exercise Price	$17.85
Outstanding at December 28, 2013, Weighted Average Remaining Contractual Life (years)	'3 years 11 months 19 days
Vested or expected to vest at December 28, 2013, Weighted Average Remaining Contractual Life (years)	'3 years 11 months 19 days
Vested and exercisable at December 28, 2013, Weighted Average Remaining Contractual Life (years)	'3 years 5 months 23 days
Outstanding at December 28, 2013, Aggregate Intrinsic Value	$29,629
Vested or expected to vest at December 28, 2013, Aggregate Intrinsic Value	'
Vested and exercisable at December 28, 2013, Aggregate Intrinsic Value	$27,341

Stock_Based_Compensation_Summa1

Stock Based Compensation - Summary of Restricted Shares (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unvested at December 29, 2012, Number of Unvested Restricted Shares	275,355
Granted, Number of Unvested Restricted Shares	162,321
Vested, Number of Unvested Restricted Shares	-24,706
Canceled/forfeited, Number of Unvested Restricted Shares	-16,610
Unvested at December 28, 2013, Number of Unvested Restricted Shares	396,360
Unvested at December 29, 2012, Weighted Average Grant Date Fair Value	$38.51
Granted, Weighted Average Grant Date Fair Value	$48.81
Vested, Weighted Average Grant Date Fair Value	$18.66
Canceled/forfeited, Weighted Average Grant Date Fair Value	$41.73
Unvested at December 28, 2013, Weighted Average Grant Date Fair Value	$43.83
Restricted Share Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unvested at December 29, 2012, Number of Unvested Restricted Shares	5,265
Granted, Number of Unvested Restricted Shares	6,414
Vested, Number of Unvested Restricted Shares	-5,265
Canceled/forfeited, Number of Unvested Restricted Shares	'
Unvested at December 28, 2013, Number of Unvested Restricted Shares	6,414
Unvested at December 29, 2012, Weighted Average Grant Date Fair Value	$42.73
Granted, Weighted Average Grant Date Fair Value	$56.08
Vested, Weighted Average Grant Date Fair Value	$42.73
Canceled/forfeited, Weighted Average Grant Date Fair Value	'
Unvested at December 28, 2013, Weighted Average Grant Date Fair Value	$56.08

Stock_Based_Compensation_Summa2

Stock Based Compensation - Summary of Fair Value Option Grant Using Black-Scholes Option-Pricing Model (Detail)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected dividend yield	0.00%	0.00%	0.00%
Weighted average expected volatility	39.00%	44.60%	49.60%
Weighted average risk-free interest rate	0.60%	1.00%	2.50%
Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected holding period(s)	'4 years	'4 years 6 months	'3 years 7 months 17 days
Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected holding period(s)	'4 years 11 months 5 days	'6 years 3 months	'6 years 3 months

Benefit_Plans_Additional_Infor

Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service period required for plan	'1 month	'	'
Vesting rate	100.00%	'	'
Recognized expenses	$1.50	$1.50	$1
Percentage of deferred compensation plan for deferment of base salary	75.00%	'	'
Deferred compensation plan, assets	2.5	1.6	'
Deferred compensation plan, liability	$2.60	$1.70	'
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Percentage of deferred compensation plan for eligible compensation	100.00%	'	'
Minimum [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Employee's contribution	1.00%	'	'
Matching contribution	100.00%	'	'
Company participant compensation percentage	3.00%	'	'
Maximum [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Employee's contribution	100.00%	'	'
Matching contribution	50.00%	'	'
Company participant compensation percentage	2.00%	'	'

Lease_Commitments_Additional_I

Lease Commitments - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
		Location	Location
Long-term Purchase Commitment [Line Items]	'	'	'
Lease expiration year	'2034	'	'
Number of location relating to lease termination	'	1	1
Facility Closing [Member]	'	'	'
Long-term Purchase Commitment [Line Items]	'	'	'
Lease termination costs, net of tax	'	0.4	0.7
Minimum [Member]	'	'	'
Long-term Purchase Commitment [Line Items]	'	'	'
Operating lease renewal period	'1 year	'	'
Maximum [Member]	'	'	'
Long-term Purchase Commitment [Line Items]	'	'	'
Operating lease renewal period	'10 years	'	'

Lease_Commitments_Net_Rent_Exp

Lease Commitments - Net Rent Expenses (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Leases [Abstract]	'	'	'
Minimum rentals	$97,332	$86,178	$79,710
Contingent rentals	110	15	141
Rent expense total	97,442	86,193	79,851
Less: Sublease rentals	-244	-248	-243
Net rental expense	$97,198	$85,945	$79,608

Lease_Commitments_Lease_Commit

Lease Commitments - Lease Commitments (Detail) (USD $)	Dec. 28, 2013
In Thousands, unless otherwise specified
Leases [Abstract]	'
2014	$101,604
2015	94,942
2016	88,763
2017	78,607
2018	64,845
Thereafter	204,646
Total Operating Leases	$633,407

Lease_Commitments_Lease_Commit1

Lease Commitments - Lease Commitments (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 28, 2013
Long-term Purchase Commitment [Line Items]	'
Fees associated with west coast logistics facility	$2.30
Real Estate [Member]	'
Long-term Purchase Commitment [Line Items]	'
Percentage of minimum lease obligation	16.10%

Segment_and_Product_Data_Addit

Segment and Product Data - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Feb. 14, 2013	Dec. 29, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 28, 2013	Dec. 28, 2013
	Stock_Unit			Maximum [Member]	Maximum [Member]	Maximum [Member]	Retail [Member]	Direct [Member]
	Segment
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'
Number of business segments	2	'	'	'	'	'	'	'
Number of SKUs available for online access	26,000	'	'	'	'	'	'	'
Goodwill	$210,633	$33,385	$177,248	'	'	'	$165,300	$45,300
Sales from international sources	'	'	'	0.50%	0.50%	0.50%	'	'

Segment_and_Product_Data_Table1

Segment and Product Data - Table of Key Financial Information of Company's Business Segments (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Revenue from External Customer [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	$256,427	$272,472	$279,483	$279,087	$218,876	$238,994	$244,981	$248,051	$1,087,469	$950,902	$856,586
Income from operations	18,925	26,102	30,584	34,681	16,471	24,768	27,704	30,429	110,292	99,372	76,834
Operating Segments [Member] | Retail [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	969,610	849,765	765,925
Income from operations	'	'	'	'	'	'	'	'	192,439	173,300	147,023
Operating Segments [Member] | Direct [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	117,859	101,137	90,661
Income from operations	'	'	'	'	'	'	'	'	21,930	19,588	16,705
Corporate Costs [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Income from operations	'	'	'	'	'	'	'	'	($104,077)	($93,516)	($86,894)

Segment_and_Product_Data_Table2

Segment and Product Data - Table of Key Financial Information of Company's Business Segments (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Revenue from External Customer [Line Items]	'	'	'
Depreciation and amortization	$27,100,000	$22,900,000	$19,800,000
Insurance recoveries	1,079,000	'	'
Acquisition and integration	4,300,000	'	'
Corporate Costs [Member]	'	'	'
Revenue from External Customer [Line Items]	'	'	'
Depreciation and amortization	28,000,000	23,100,000	20,300,000
Insurance recoveries	1,100,000	'	'
Acquisition and integration	$4,300,000	$1,300,000	'

Segment_and_Product_Data_Net_M

Segment and Product Data - Net Merchandise Sales by Major Product Category (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	$256,427	$272,472	$279,483	$279,087	$218,876	$238,994	$244,981	$248,051	$1,087,469	$950,902	$856,586
Other [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	109,554	91,109	85,048
Total [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	1,084,980	948,685	853,192
Delivery Revenue [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	2,489	2,217	3,394
Operating Segments [Member] | Vitamins, Minerals, Herbs and Homeopathy [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	276,447	243,910	231,457
Operating Segments [Member] | Sports Nutrition [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	393,659	339,359	283,908
Operating Segments [Member] | Specialty Supplements [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales	'	'	'	'	'	'	'	'	$305,320	$274,307	$252,779

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments - Additional Information (Detail) (Investments Recorded at Fair Value [Member], USD $)	Dec. 28, 2013
In Millions, unless otherwise specified
Investments Recorded at Fair Value [Member]	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'
Cash equivalents, fair value	$70.10

Selected_Quarterly_Financial_I2

Selected Quarterly Financial Information - Summary of Quarterly Financial Information (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net sales	$256,427	$272,472	$279,483	$279,087	$218,876	$238,994	$244,981	$248,051	$1,087,469	$950,902	$856,586
Gross profit	85,694	93,053	97,257	101,642	76,391	82,500	85,755	88,336	377,646	332,982	292,959
Income from operations	18,925	26,102	30,584	34,681	16,471	24,768	27,704	30,429	110,292	99,372	76,834
Net income	$11,219	$16,268	$18,262	$20,797	$9,678	$16,291	$16,595	$18,261	$66,546	$60,825	$44,864
Net income per common share:	'	'	'	'	'	'	'	'	'	'	'
Basic	$0.37	$0.54	$0.61	$0.70	$0.32	$0.55	$0.57	$0.63	$2.22	$2.06	$1.56
Diluted	$0.37	$0.53	$0.60	$0.68	$0.32	$0.54	$0.55	$0.61	$2.18	$2.02	$1.52

Selected_Quarterly_Financial_I3

Selected Quarterly Financial Information - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Effect of Fourth Quarter Events [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Acquisition and integration costs	'	'	'	'	'	'	'	'	$4,300,000	'	'
Proceeds from insurance recoveries	'	'	'	'	'	'	'	'	322,000	'	'
Net sales	256,427,000	272,472,000	279,483,000	279,087,000	218,876,000	238,994,000	244,981,000	248,051,000	1,087,469,000	950,902,000	856,586,000
Net income (loss)	11,219,000	16,268,000	18,262,000	20,797,000	9,678,000	16,291,000	16,595,000	18,261,000	66,546,000	60,825,000	44,864,000
Start up costs	'	'	'	'	400,000	'	'	'	'	800,000	'
Super Storm Sandy [Member]	'	'	'	'	'	'	'	'	'	'	'
Effect of Fourth Quarter Events [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Proceeds from insurance recoveries	'	'	900,000	200,000	'	'	'	'	1,100,000	'	'
Net sales	'	'	'	'	3,000,000	'	'	'	'	'	'
Net income (loss)	'	'	'	'	-1,200,000	'	'	'	'	'	'
Super Supplements [Member]	'	'	'	'	'	'	'	'	'	'	'
Effect of Fourth Quarter Events [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Acquisition and integration costs	500,000	900,000	900,000	2,000,000	'	'	'	'	4,300,000	'	'
Costs related to acquisition	'	'	'	'	$1,300,000	'	'	'	'	$1,300,000	'