Vitamin Shoppe (VSI) 10-Q 3 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 25, 2016	Jul. 15, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	Vitamin Shoppe, Inc.
Entity Central Index Key	1,360,530
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 25, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		24,000,924

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Current assets:
Cash and cash equivalents	$ 1,992	$ 15,104
Accounts receivable, net of allowance of $941 and $897 in 2016 and 2015, respectively	5,381	7,437
Inventories	230,256	226,830
Prepaid expenses and other current assets	30,636	25,194
Total current assets	268,265	274,565
Property and equipment, net of accumulated depreciation and amortization of $288,110 and $274,222 in 2016 and 2015, respectively	139,769	140,158
Goodwill	243,269	243,269
Other intangibles, net	86,623	87,270
Other assets	2,606	3,429
Total assets	740,532	748,691
Current liabilities:
Revolving credit facility	15,000	8,000
Accounts payable	56,151	41,217
Accrued expenses and other current liabilities	58,187	68,259
Total current liabilities	129,338	117,476
Convertible notes, net	118,067	115,410
Deferred rent	38,921	39,889
Other long-term liabilities	1,901	615
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value; 250,000,000 shares authorized and no shares issued and outstanding at June 25, 2016 and December 26, 2015	0	0
Common stock, $0.01 par value; 400,000,000 shares authorized, 24,125,183 shares issued and 23,972,349 shares outstanding at June 25, 2016, and 25,993,715 shares issued and 25,873,581 shares outstanding at December 26, 2015	241	260
Additional paid-in capital	92,549	139,827
Treasury stock, at cost; 152,834 shares at June 25, 2016 and 120,134 shares at December 26, 2015	(6,199)	(5,225)
Accumulated other comprehensive loss	0	(60)
Retained earnings	365,714	340,499
Total stockholders’ equity	452,305	475,301
Total liabilities and stockholders’ equity	$ 740,532	$ 748,691

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 941	$ 897
Accumulated depreciation and amortization, property and equipment	$ 288,110	$ 274,222
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	250,000,000	250,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	24,125,183	25,993,715
Common stock, shares outstanding (in shares)	23,972,349	25,873,581
Treasury stock, shares (in shares)	152,834	120,134

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Income Statement [Abstract]
Net sales	$ 332,717	$ 322,338	$ 669,491	$ 659,173
Cost of goods sold	224,893	214,078	445,420	436,264
Gross profit	107,824	108,260	224,071	222,909
Selling, general and administrative expenses	87,100	84,696	176,085	168,390
Income from operations	20,724	23,564	47,986	54,519
Interest expense, net	2,352	179	4,614	343
Income before provision for income taxes	18,372	23,385	43,372	54,176
Provision for income taxes	7,939	9,144	18,157	21,235
Net income	$ 10,433	$ 14,241	$ 25,215	$ 32,941
Weighted average common shares outstanding
Basic (in shares)	23,763,934	29,230,046	24,283,135	29,363,823
Diluted (in shares)	23,938,978	29,455,455	24,474,018	29,661,400
Net income per common share
Basic (in dollars per share)	$ 0.44	$ 0.49	$ 1.04	$ 1.12
Diluted (in dollars per share)	$ 0.44	$ 0.48	$ 1.03	$ 1.11

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 10,433	$ 14,241	$ 25,215	$ 32,941
Other comprehensive income (loss):
Foreign currency translation adjustments	149	(34)	60	59
Other comprehensive income (loss)	149	(34)	60	59
Comprehensive income	$ 10,582	$ 14,207	$ 25,275	$ 33,000

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015
Cash flows from operating activities:
Net income	$ 25,215	$ 32,941
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of fixed and intangible assets	19,440	18,750
Impairment charges on fixed assets	218	321
Amortization of deferred financing fees	472	79
Amortization of debt discount on convertible notes	2,278	0
Deferred income taxes	1,899	2,344
Deferred rent	(1,546)	(1,130)
Equity compensation expense	3,534	3,486
Issuance of shares for services rendered	333	0
Tax benefits on exercises of equity awards	577	(45)
Contingent consideration for acquisition of FDC Vitamins, LLC	0	(959)
Changes in operating assets and liabilities:
Accounts receivable	2,056	3,947
Inventories	(2,538)	(23,658)
Prepaid expenses and other current assets	(5,441)	1,900
Other long-term assets	81	(217)
Accounts payable	16,879	2,148
Accrued expenses and other current liabilities	(9,077)	(9,250)
Other long-term liabilities	561	1,114
Net cash provided by operating activities	54,941	31,771
Cash flows from investing activities:
Capital expenditures	(21,005)	(20,526)
Acquisition of FDC Vitamins, LLC	0	487
Trademarks and other intangible assets	(171)	(307)
Net cash used in investing activities	(21,176)	(20,346)
Cash flows from financing activities:
Borrowings under revolving credit facility	35,000	27,000
Repayments of borrowings under revolving credit facility	(28,000)	(17,000)
Bank overdraft	(1,663)	0
Contingent consideration payment for acquisition of FDC Vitamins, LLC	0	(4,041)
Proceeds from exercises of common stock options	7	1,004
Issuance of shares under employee stock purchase plan	342	509
Tax benefits on exercises of equity awards	(577)	45
Purchases of treasury stock	(974)	(2,280)
Purchases of shares under Share Repurchase Programs	(51,011)	(25,541)
Other financing activities	(54)	(61)
Net cash used in financing activities	(46,930)	(20,365)
Effect of exchange rate changes on cash and cash equivalents	53	103
Net decrease in cash and cash equivalents	(13,112)	(8,837)
Cash and cash equivalents beginning of period	15,104	12,166
Cash and cash equivalents end of period	1,992	3,329
Supplemental disclosures of cash flow information:
Interest paid	1,738	180
Income taxes paid	21,661	16,645
Supplemental disclosures of non-cash investing activities:
Liability for purchases of property and equipment	$ 5,774	$ 5,314

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	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” together with VSI, the “Company”), is a multi-channel specialty retailer and contract manufacturer of nutritional products. Sales of both national brands and our own brands of vitamins, minerals, herbs, specialty supplements, sports nutrition and other health and wellness products (“VMS products”) are made through VSI-operated retail stores and the internet to customers located primarily in the United States. The Company manufactures products for both sales to third parties as well as for the VSI product assortment. The condensed consolidated financial statements as of June 25, 2016 and June 27, 2015 are unaudited. The condensed consolidated balance sheet as of December 26, 2015 was derived from our audited financial statements. All intercompany transactions and balances have been eliminated in consolidation. In addition, certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted. The interim financial statements reflect all adjustments, which are, in the opinion of management, necessary for a fair presentation in conformity with GAAP. The interim financial statements should be read in conjunction with the audited financial statements and notes thereto included in the Form 10-K for the fiscal year ended December 26, 2015 , as filed with the Securities and Exchange Commission on February 23, 2016 (the “Fiscal 2015 Form 10-K”). The results of operations for the interim periods should not be considered indicative of results to be expected for the full year. 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 2016 is a 53-week fiscal year. The results for the three and six months ended June 25, 2016 and June 27, 2015 are each based on 13-week and 26-week periods, respectively. The preparation of financial statements in conformity with 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. Except as noted below, 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. In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09 (“ASU 2014-09”), Revenue from Contracts with Customers (Topic 606). Under ASU 2014-09, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB deferred the effective date of ASU 2014-09 by one year. ASU 2014-09 will be effective for annual reporting periods beginning after December 15, 2017 for public companies and early adoption of ASU 2014-09 is permitted for public companies for annual reporting periods beginning after December 15, 2016. The Company is evaluating ASU 2014-09 to determine which transition approach it will utilize and if this guidance will have a material impact on the Company’s condensed consolidated financial statements. In July 2015, the FASB issued Accounting Standards Update No. 2015-11 (“ASU 2015-11”), Simplifying the Measurement of Inventory (Topic 330). ASU 2015-11 simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. ASU 2015-11 is effective for public companies for annual reporting periods beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption of ASU 2015-11 is permitted. The Company is evaluating ASU 2015-11 to determine if this guidance will have a material impact on the Company’s condensed consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02 (“ASU 2016-02”), Leases (Topic 842). ASU 2016-02 was issued by the FASB to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The main difference between previous GAAP and Topic 842 is the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous GAAP. ASU 2016-02 will require modified retrospective application at the beginning of our first quarter of Fiscal 2019, but permits adoption in an earlier period. The Company is evaluating ASU 2016-02 in order to determine the impact of this guidance on the Company’s condensed consolidated financial statements and anticipates this guidance will significantly impact our condensed consolidated financial statements given we have a significant number of leases. In March 2016, the FASB issued Accounting Standards Update No. 2016-09 (“ASU 2016-09”), Compensation-Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 addresses simplification of several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for public companies for annual reporting periods beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption of ASU 2016-09 is permitted. The Company is evaluating ASU 2016-09 to determine if this guidance will have a material impact on the Company’s condensed consolidated financial statements.

Inventories

Inventories	6 Months Ended
	Jun. 25, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories The components of inventories are as follows (in thousands): June 25, 2016 December 26, 2015 Finished goods $ 209,522 $ 211,879 Work-in-process 7,139 6,180 Raw materials 13,595 8,771 $ 230,256 $ 226,830

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 25, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill is allocated between the Company’s segments (reporting units), retail, direct and manufacturing. The following table discloses the carrying value of all intangible assets (in thousands): June 25, 2016 December 26, 2015 Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Intangible assets Goodwill $ 243,269 $ — $ 243,269 $ 243,269 $ — $ 243,269 Tradenames – Indefinite-lived 68,405 — 68,405 68,405 — 68,405 Brands 10,000 1,157 8,843 10,000 880 9,120 Customer relationships 7,500 781 6,719 7,500 594 6,906 Tradenames – Definite-lived 4,844 2,946 1,898 4,673 2,722 1,951 Software 1,300 542 758 1,300 412 888 $ 335,318 $ 5,426 $ 329,892 $ 335,147 $ 4,608 $ 330,539 The useful lives of the Company’s definite-lived intangible assets are between 3 to 20 years. The expected amortization expense on definite-lived intangible assets on the Company’s condensed consolidated balance sheet at June 25, 2016 , is as follows (in thousands): Remainder of Fiscal 2016 $ 715 Fiscal 2017 1,430 Fiscal 2018 1,430 Fiscal 2019 1,430 Fiscal 2020 1,430 Thereafter 11,783 $ 18,218

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jun. 25, 2016
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following (in thousands): June 25, 2016 December 26, 2015 Accrued salaries and related expenses $ 10,781 $ 10,115 Sales tax payable and related expenses 6,857 6,975 Deferred sales (a) 5,969 20,483 Accrued fixed asset additions 4,332 5,842 Other accrued expenses 30,248 24,844 $ 58,187 $ 68,259 (a) The reduction in deferred sales reflects the change in the Company's loyalty program from annual redemptions to quarterly redemptions beginning in Fiscal 2016.

Credit Arrangements

Credit Arrangements	6 Months Ended
	Jun. 25, 2016
Debt Disclosure [Abstract]
Credit Arrangements	Credit Arrangements Convertible Senior Notes due 2020 On December 9, 2015, the Company issued $143.8 million of its 2.25% Convertible Senior Notes due 2020 (the “Convertible Notes”). The Convertible Notes are senior unsecured obligations of VSI. Interest on the Convertible Notes is payable on June 1 and December 1 of each year, commencing on June 1, 2016 until their maturity date of December 1, 2020. The Company may not redeem the Convertible Notes prior to the maturity date. Prior to July 1, 2020, the Convertible Notes will be convertible only under certain circumstances. The Convertible Notes will be convertible at an initial conversion rate of 25.1625 shares of the Company’s common stock per $1,000 principal amount of the Convertible Notes, which is equivalent to an initial conversion price of approximately $39.74 . The conversion rate will be subject to adjustment in some events but will not be adjusted for any accrued and unpaid interest. In addition, following certain corporate events that occur prior to the maturity date, the Company is required to increase, in certain circumstances, the conversion rate for a holder who elects to convert its Convertible Notes in connection with such a corporate event including customary conversion rate adjustments in connection with a “make-whole fundamental change” as defined. Upon conversion, the Company may satisfy its conversion obligation by paying or delivering, as applicable, cash, shares of its common stock or a combination of cash and shares of its common stock, at its election. The Company allocated the principal amount of the Convertible Notes between its liability and equity components (see table below). The carrying amount of the liability component was determined by measuring the fair value of a similar debt instrument of similar credit quality and maturity that did not have the conversion feature. The carrying amount of the equity component, representing the embedded conversion option, was determined by deducting the fair value of the liability component from the principal amount of the Convertible Notes as a whole. The equity component was recorded to additional paid-in capital and is not remeasured as long as it continues to meet the conditions for equity classification. The excess of the principal amount of the Convertible Notes over the carrying amount of the liability component was recorded as a debt discount, and is being amortized to interest expense using an effective interest rate of 3.8% over the term of the Convertible Notes. The Company allocated the total amount of transaction costs incurred to the liability and equity components using the same proportions as the proceeds from the Convertible Notes. Transaction costs attributable to the liability component were recorded as a direct deduction from the liability component of the Convertible Notes, and are being amortized to interest expense using the effective interest method through the maturity date. Transaction costs attributable to the equity component were netted with the equity component of the Convertible Notes in additional paid-in capital. The Convertible Notes consist of the following components (in thousands): June 25, 2016 December 26, 2015 Liability component: Principal $ 143,750 $ 143,750 Conversion feature (24,800 ) (24,800 ) Liability portion of debt issuance costs (3,802 ) (3,800 ) Amortization 2,919 260 Net carrying amount $ 118,067 $ 115,410 Equity component: Conversion feature $ 24,800 $ 24,800 Equity portion of debt issuance costs (793 ) (793 ) Deferred taxes 941 941 Net carrying amount $ 24,948 $ 24,948 In connection with the issuance of the Convertible Notes, the Company entered into convertible note hedge transactions for which it paid an aggregate $26.4 million . In addition, the Company sold warrants for which it received aggregate proceeds of $13.0 million . The convertible note hedge transactions are expected generally to reduce potential dilution of the Company’s common stock upon any conversion of notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes. However, the warrant transaction could separately have a dilutive effect to the extent that the market value per share of the Company’s common stock exceeds the applicable strike price of the warrant transactions, which is approximately $52.99 at inception. As these transactions meet certain accounting criteria, the convertible note hedge and warrant transactions are recorded in stockholders’ equity, are not accounted for as derivatives and are not remeasured each reporting period. The net proceeds from the Convertible Notes and related transactions of $125.7 million , net of commissions and offering costs of $4.6 million , were used to repurchase shares of the Company’s common stock under the Company’s share repurchase programs. Refer to Note 9. Share Repurchase Programs for additional information. Revolving Credit Facility As of June 25, 2016 and December 26, 2015 , the Company had $15.0 million and $8.0 million of borrowings outstanding on its Revolving Credit Facility (the "Revolving Credit Facility"), respectively. Subject to the terms of the Revolving Credit Facility, which has a maturity date of October 11, 2018 , the Company may borrow up to $90.0 million , 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 as well as certain inventory of the Company. The obligations thereunder are secured by a security interest in substantially all of the assets of the Company. Under the Revolving Credit Facility, VSI has guaranteed the Company’s obligations, and Industries and its wholly-owned subsidiaries have each guaranteed the obligations of the other respective entities. The Revolving Credit Facility provides for affirmative and negative covenants affecting the Company. 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. The largest amount outstanding during the six months ended June 25, 2016 and June 27, 2015 was $21.0 million and $27.0 million , respectively. The unused available line of credit under the Revolving Credit Facility at June 25, 2016 was $72.1 million . Borrowings under the 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 Revolving Credit Facility exceeds 50% of the borrowing base availability under the Revolving Credit Facility. The weighted average interest rate for the Revolving Credit Facility during the six months ended June 25, 2016 and June 27, 2015 was 1.74% and 1.44% , respectively. The commitment fee on the undrawn portion of the $90.0 million Revolving Credit Facility was 0.25% as of June 25, 2016 and December 26, 2015 . Interest expense, net for the three and six months ended June 25, 2016 and June 27, 2015 consists of the following (in thousands): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Amortization of debt discount on convertible notes $ 1,144 $ — $ 2,278 $ — Interest on convertible notes 833 — 1,637 — Amortization of deferred financing fees 235 40 472 79 Interest / fees on the revolving credit facility and other interest 140 140 227 265 Interest income — (1 ) — (1 ) Interest expense, net $ 2,352 $ 179 $ 4,614 $ 343

Stock Based Compensation

Stock Based Compensation	6 Months Ended
	Jun. 25, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	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”). As of June 25, 2016 , there were 2,106,138 shares available to grant under both plans which includes 152,834 shares currently held by the Company as treasury stock. The following table summarizes restricted shares for the 2009 Plan as of June 25, 2016 and changes during the six month period then ended: Number of Unvested Restricted Shares Weighted Average Grant Date Fair Value Unvested at December 26, 2015 398,562 $ 42.65 Granted 137,242 $ 30.11 Vested (83,275 ) $ 46.84 Canceled/forfeited (64,931 ) $ 44.79 Unvested at June 25, 2016 387,598 $ 36.95 The total intrinsic value of restricted shares vested during the six months ended June 25, 2016 and June 27, 2015 , was $2.5 million and $5.6 million , respectively. The following table summarizes stock options for the 2006 and 2009 Plans as of June 25, 2016 and changes during the six month period then ended: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Life (years) Aggregate Intrinsic Value (in thousands) Outstanding at December 26, 2015 284,838 $ 22.65 Granted 217,369 $ 30.25 Exercised (558 ) $ 13.43 Canceled/forfeited (11,133 ) $ 34.19 Outstanding at June 25, 2016 490,516 $ 25.76 5.50 $ 2,749 Vested or expected to vest at June 25, 2016 475,253 $ 25.76 5.50 Vested and exercisable at June 25, 2016 270,647 $ 21.89 2.12 $ 2,746 The total intrinsic value of options exercised during the six months ended June 25, 2016 was de minimis and during the six months ended June 27, 2015 was $0.8 million . The cash received from options exercised during the six months ended June 25, 2016 was de minimis and during the six months ended June 27, 2015 was $1.0 million . Stock options granted during the six months ended June 25, 2016 shall become vested in equal installments on the first, second and third anniversaries of the date on which such equity grants were awarded. The following table summarizes performance share units for the 2009 Plan as of June 25, 2016 and changes during the six month period then ended: Number of Unvested Performance Share Units Weighted Average Grant Date Fair Value Unvested at December 26, 2015 — $ — Granted 119,155 $ 30.25 Vested — $ — Canceled/forfeited — $ — Unvested at June 25, 2016 119,155 $ 30.25 Performance share units granted during the six months ended June 25, 2016 shall become vested on December 29, 2018 if the performance criteria are achieved. Performance share units can vest at a range of 25% to 150% based on the achievement of pre-established performance targets. The following table summarizes restricted share units for the 2009 Plan as of June 25, 2016 and changes during the six month period then ended: Number of Unvested Weighted Unvested at December 26, 2015 11,280 $ 37.25 Granted 940 $ 29.98 Vested (8,460 ) $ 37.25 Canceled/forfeited — $ — Unvested at June 25, 2016 3,760 $ 35.43 The total intrinsic value of restricted share units vested during the six months ended June 25, 2016 and June 27, 2015 , was $0.3 million and $0.5 million , respectively. Compensation expense attributable to stock based compensation for the three and six months ended June 25, 2016 was approximately $1.8 million and $3.5 million , respectively, and for the three and six months ended June 27, 2015 was approximately $1.3 million and $3.5 million , respectively. As of June 25, 2016 , the remaining unrecognized stock based compensation expense for non-vested stock options, restricted shares, performance share units and restricted share units to be expensed in future periods is $11.1 million , and the related weighted-average period over which it is expected to be recognized is 2.0 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, performance share units and restricted share units as of June 25, 2016 is approximately $1.0 million . The weighted-average grant date fair value of stock options during the three and six months ended June 25, 2016 was $7.89 and $8.29 , respectively. Stock options were not granted during the three and six months ended June 27, 2015 . 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: Three Months Ended Six Months Ended June 25, 2016 June 25, 2016 Expected dividend yield 0.0 % 0.0 % Weighted average expected volatility 31.8 % 32.6 % Weighted average risk-free interest rate 1.1 % 1.2 % Expected holding period 4.00 years 4.00 years Treasury Stock – As part of the Company’s equity incentive plans, the Company makes required tax payments on behalf of employees as their restricted shares vest. The Company withholds the number of vested shares having a value on the date of vesting equal to the minimum statutory tax obligation. The shares withheld are recorded as treasury shares. During the six months ended June 25, 2016 , the Company purchased 32,700 shares in settlement of employees’ tax obligations for a total of $1.0 million . The Company accounts for treasury stock using the cost method. These shares are available to grant under the Company’s equity incentive plans.

Advertising Costs

Advertising Costs	6 Months Ended
	Jun. 25, 2016
Other Income and Expenses [Abstract]
Advertising Costs	Advertising Costs The costs of advertising for online marketing arrangements, magazines, direct mail and radio are primarily expensed the first time the advertising takes place. Advertising expense was $6.3 million and $4.9 million for the three months ended June 25, 2016 and June 27, 2015 , respectively, and $12.4 million and $11.5 million for the six months ended June 25, 2016 and June 27, 2015 , respectively.

Net Income Per Share

Net Income Per Share	6 Months Ended
	Jun. 25, 2016
Earnings Per Share [Abstract]
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, unvested performance share units 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, unvested performance share units 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): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Numerator: Net income $ 10,433 $ 14,241 $ 25,215 $ 32,941 Denominator: Basic weighted average common shares outstanding 23,763,934 29,230,046 24,283,135 29,363,823 Effect of dilutive securities: Stock options 71,341 101,446 72,356 112,515 Restricted shares 97,167 122,635 114,892 183,610 Performance share units 5,086 — 2,627 — Restricted share units 1,450 1,328 1,008 1,452 Diluted weighted average common shares outstanding 23,938,978 29,455,455 24,474,018 29,661,400 Basic net income per common share $ 0.44 $ 0.49 $ 1.04 $ 1.12 Diluted net income per common share $ 0.44 $ 0.48 $ 1.03 $ 1.11 No stock options or restricted shares have been excluded from the above calculation for the three months ended June 25, 2016. Stock options and restricted shares for the three months ended June 27, 2015 in the amount of 3,657 shares have been excluded from the above calculation as they were anti-dilutive. Stock options and restricted shares for the six months ended June 25, 2016 and June 27, 2015 in the amount of 5,080 shares and 6,836 shares, respectively, have been excluded from the above calculation as they were anti-dilutive. The Company has the intent and ability to settle the principal portion of its Convertible Notes in cash, and as such, has applied the treasury stock method, which has resulted in the underlying convertible shares being anti-dilutive for the three and six months ended June 25, 2016 as the Company’s average stock price was less than the conversion price. Refer to Note 5. Credit Arrangements for additional information on the Convertible Notes.

Share Repurchase Programs

Share Repurchase Programs	6 Months Ended
	Jun. 25, 2016
Equity [Abstract]
Share Repurchase Programs	Share Repurchase Programs The Company’s board of directors approved share repurchase programs that enable the Company to purchase up to an aggregate of $300 million of its shares of common stock from time to time over three year periods ending on August 4, 2017 , May 5, 2018 and November 22, 2018 , respectively. As of June 25, 2016 , 7,486,306 shares have been repurchased for a total of $254.9 million . The repurchase program does not obligate the Company to acquire any specific number of shares of its common stock and may be suspended, terminated or modified at any time for any reason, including market conditions, the cost of repurchasing such shares, the availability of alternative investment opportunities, liquidity, and other factors deemed appropriate. These factors may also affect the timing and amount of share repurchases. During the three and six months ended June 25, 2016 , the Company repurchased 304,943 and 1,739,484 shares, respectively, which were retired upon repurchase. The total purchase price during the three and six months ended June 25, 2016 was $8.7 million and $51.0 million , respectively, with an average repurchase price per share of $28.54 and $29.33 , respectively. During the three and six months ended June 27, 2015 , the Company repurchased 226,332 and 626,332 shares, respectively, which were retired upon repurchase. The total purchase price during the three and six months ended June 27, 2015 was $9.0 million and $25.5 million , respectively, with an average repurchase price per share of $39.76 and $40.78 , respectively.

Legal Proceedings

Legal Proceedings	6 Months Ended
	Jun. 25, 2016
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Legal Proceedings The Company is party to various lawsuits arising from time to time in the normal course of business, some of which are covered by insurance. 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 Data

Segment Data	6 Months Ended
	Jun. 25, 2016
Segment Reporting [Abstract]
Segment Data	Segment Data The Company currently operates three business segments, retail, direct and manufacturing. 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 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 VMS products through Vitamin Shoppe and Super Supplements retail stores in the United States and Puerto Rico. The direct segment generates revenue through the sale of VMS products primarily through the Company's websites. The Company's websites offer customers online access to a full assortment of approximately 17,400 SKUs. The manufacturing segment supplies the retail and direct segments, along with various third parties, with finished products for sale. Corporate costs represent all other expenses not allocated to the retail, direct or manufacturing segments which include, but are not limited to: human resources, legal, retail management, direct management, finance, information technology, depreciation (primarily related to assets utilized by the retail and direct business segments as well as corporate assets) and amortization, and various other corporate level activity related expenses. Intercompany sales transactions are eliminated in consolidation. The Company’s segments are designed to allocate resources internally and provide a framework to determine management responsibility. The accounting policies of the segments are consistent with those described in Note 2. Summary of Significant Accounting Policies in the Fiscal 2015 Form 10-K. The Company has allocated $165.3 million , $45.3 million and $32.6 million of its recorded goodwill to the retail, direct and manufacturing segments, respectively. The Company does not have identifiable assets separated by segment, with the exception of the identifiable assets of the manufacturing segment which were $88.5 million and $88.4 million as of June 25, 2016 and December 26, 2015, respectively. Capital expenditures for the manufacturing segment for the six months ended June 25, 2016 and June 27, 2015 were approximately $1.1 million and $2.3 million , respectively. At June 25, 2016 and December 26, 2015 , long lived assets of the manufacturing segment were $59.8 million and $60.4 million , respectively. Depreciation and amortization expense, included in selling, general and administrative expenses, for the manufacturing segment during the three months ended June 25, 2016 and June 27, 2015 was approximately $0.4 million in both periods. Depreciation and amortization expense, included in selling, general and administrative expenses, for the manufacturing segment during the six months ended June 25, 2016 and June 27, 2015 was approximately $0.8 million and $0.7 million , respectively. The following table contains key financial information of the Company’s business segments (in thousands): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Net sales: Retail $ 288,290 $ 278,200 $ 576,302 $ 566,183 Direct 32,773 30,346 68,625 65,190 Manufacturing 20,778 24,664 41,338 46,492 Segment net sales 341,841 333,210 686,265 677,865 Elimination of intersegment revenues (9,124 ) (10,872 ) (16,774 ) (18,692 ) Net sales $ 332,717 $ 322,338 $ 669,491 $ 659,173 Income (Loss) from operations: Retail $ 50,469 $ 51,613 $ 107,132 $ 107,672 Direct 4,500 5,587 9,686 10,652 Manufacturing (1) (1,822 ) (1,510 ) (2,084 ) (1,211 ) Corporate costs (2) (32,423 ) (32,126 ) (66,748 ) (62,594 ) Income from operations $ 20,724 $ 23,564 $ 47,986 $ 54,519 (1) Manufacturing loss from operations for the three and six months ended June 27, 2015 includes a $1.4 million charge for accounts receivable for one wholesale customer which were deemed uncollectible. (2) Corporate costs include (in thousands): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Depreciation and amortization expenses $ 8,965 $ 9,155 $ 18,634 $ 18,035 Canada stores closing costs (a) 1,864 — 2,963 — Cost reduction project (b) 1,492 — 1,492 — Super Supplements conversion costs (c) — — 1,275 — Reinvention strategy costs (d) — — 541 — Management realignment charges (e) — 2,174 — 2,174 Integration costs (f) — 410 — 770 (a) Costs primarily include lease termination charges. (b) Outside consulting costs relating to a project to identify and implement cost reduction opportunities. (c) Costs primarily related to the closure of the Seattle distribution center. (d) The costs represent outside consultants fees in connection with the Company’s “reinvention strategy”. (e) Management realignment charges primarily consist of severance, sign-on bonuses, recruiting and relocation costs. (f) Represents integration costs related to the acquisition of Nutri-Force, consisting primarily of professional fees.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 25, 2016
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	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 financial instruments include cash, accounts receivable, accounts payable and its Revolving Credit Facility. The Company believes that the recorded values of these financial instruments approximate their fair values due to their nature and respective durations. The following table contains information of the Company’s Convertible Notes (in thousands): June 25, 2016 December 26, 2015 Fair Value $ 116,896 $ 119,784 Carrying Value 118,067 115,410 The fair value of the Convertible Notes was determined based on inputs that are observable in the market or that could be derived from, or corroborated with, observable market data, including the trading price of the Company’s Convertible Notes, when available, the Company’s stock price and interest rates based on similar debt issued by parties with credit ratings similar to the Company (Level 1 or 2). Certain assets are measured at fair value on a non-recurring basis, that is, the assets are subject to fair value adjustments in certain circumstances such as when there is evidence of impairment. These measures of fair value, and related inputs, are considered Level 2 or 3 measures under the fair value hierarchy.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates	The preparation of financial statements in conformity with 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.
New Accounting Pronouncements	Except as noted below, 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. In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09 (“ASU 2014-09”), Revenue from Contracts with Customers (Topic 606). Under ASU 2014-09, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB deferred the effective date of ASU 2014-09 by one year. ASU 2014-09 will be effective for annual reporting periods beginning after December 15, 2017 for public companies and early adoption of ASU 2014-09 is permitted for public companies for annual reporting periods beginning after December 15, 2016. The Company is evaluating ASU 2014-09 to determine which transition approach it will utilize and if this guidance will have a material impact on the Company’s condensed consolidated financial statements. In July 2015, the FASB issued Accounting Standards Update No. 2015-11 (“ASU 2015-11”), Simplifying the Measurement of Inventory (Topic 330). ASU 2015-11 simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. ASU 2015-11 is effective for public companies for annual reporting periods beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption of ASU 2015-11 is permitted. The Company is evaluating ASU 2015-11 to determine if this guidance will have a material impact on the Company’s condensed consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02 (“ASU 2016-02”), Leases (Topic 842). ASU 2016-02 was issued by the FASB to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The main difference between previous GAAP and Topic 842 is the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous GAAP. ASU 2016-02 will require modified retrospective application at the beginning of our first quarter of Fiscal 2019, but permits adoption in an earlier period. The Company is evaluating ASU 2016-02 in order to determine the impact of this guidance on the Company’s condensed consolidated financial statements and anticipates this guidance will significantly impact our condensed consolidated financial statements given we have a significant number of leases. In March 2016, the FASB issued Accounting Standards Update No. 2016-09 (“ASU 2016-09”), Compensation-Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 addresses simplification of several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for public companies for annual reporting periods beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption of ASU 2016-09 is permitted. The Company is evaluating ASU 2016-09 to determine if this guidance will have a material impact on the Company’s condensed consolidated financial statements.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 25, 2016
Inventory Disclosure [Abstract]
Components of Inventories	The components of inventories are as follows (in thousands): June 25, 2016 December 26, 2015 Finished goods $ 209,522 $ 211,879 Work-in-process 7,139 6,180 Raw materials 13,595 8,771 $ 230,256 $ 226,830

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 25, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	The following table discloses the carrying value of all intangible assets (in thousands): June 25, 2016 December 26, 2015 Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Intangible assets Goodwill $ 243,269 $ — $ 243,269 $ 243,269 $ — $ 243,269 Tradenames – Indefinite-lived 68,405 — 68,405 68,405 — 68,405 Brands 10,000 1,157 8,843 10,000 880 9,120 Customer relationships 7,500 781 6,719 7,500 594 6,906 Tradenames – Definite-lived 4,844 2,946 1,898 4,673 2,722 1,951 Software 1,300 542 758 1,300 412 888 $ 335,318 $ 5,426 $ 329,892 $ 335,147 $ 4,608 $ 330,539
Expected Amortization Expense on Definite-Lived Intangible Assets	The expected amortization expense on definite-lived intangible assets on the Company’s condensed consolidated balance sheet at June 25, 2016 , is as follows (in thousands): Remainder of Fiscal 2016 $ 715 Fiscal 2017 1,430 Fiscal 2018 1,430 Fiscal 2019 1,430 Fiscal 2020 1,430 Thereafter 11,783 $ 18,218

Accrued Expenses and Other Cu22

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 25, 2016
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consist of the following (in thousands): June 25, 2016 December 26, 2015 Accrued salaries and related expenses $ 10,781 $ 10,115 Sales tax payable and related expenses 6,857 6,975 Deferred sales (a) 5,969 20,483 Accrued fixed asset additions 4,332 5,842 Other accrued expenses 30,248 24,844 $ 58,187 $ 68,259 (a) The reduction in deferred sales reflects the change in the Company's loyalty program from annual redemptions to quarterly redemptions beginning in Fiscal 2016.

Credit Arrangements (Tables)

Credit Arrangements (Tables)	6 Months Ended
	Jun. 25, 2016
Debt Disclosure [Abstract]
Components of Convertible Notes	The Convertible Notes consist of the following components (in thousands): June 25, 2016 December 26, 2015 Liability component: Principal $ 143,750 $ 143,750 Conversion feature (24,800 ) (24,800 ) Liability portion of debt issuance costs (3,802 ) (3,800 ) Amortization 2,919 260 Net carrying amount $ 118,067 $ 115,410 Equity component: Conversion feature $ 24,800 $ 24,800 Equity portion of debt issuance costs (793 ) (793 ) Deferred taxes 941 941 Net carrying amount $ 24,948 $ 24,948
Interest Expense, Net	Interest expense, net for the three and six months ended June 25, 2016 and June 27, 2015 consists of the following (in thousands): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Amortization of debt discount on convertible notes $ 1,144 $ — $ 2,278 $ — Interest on convertible notes 833 — 1,637 — Amortization of deferred financing fees 235 40 472 79 Interest / fees on the revolving credit facility and other interest 140 140 227 265 Interest income — (1 ) — (1 ) Interest expense, net $ 2,352 $ 179 $ 4,614 $ 343

Stock Based Compensation (Table

Stock Based Compensation (Tables)	6 Months Ended
	Jun. 25, 2016
Summary of Stock Options	The following table summarizes stock options for the 2006 and 2009 Plans as of June 25, 2016 and changes during the six month period then ended: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Life (years) Aggregate Intrinsic Value (in thousands) Outstanding at December 26, 2015 284,838 $ 22.65 Granted 217,369 $ 30.25 Exercised (558 ) $ 13.43 Canceled/forfeited (11,133 ) $ 34.19 Outstanding at June 25, 2016 490,516 $ 25.76 5.50 $ 2,749 Vested or expected to vest at June 25, 2016 475,253 $ 25.76 5.50 Vested and exercisable at June 25, 2016 270,647 $ 21.89 2.12 $ 2,746
Summary of Performance Share Units	The following table summarizes performance share units for the 2009 Plan as of June 25, 2016 and changes during the six month period then ended: Number of Unvested Performance Share Units Weighted Average Grant Date Fair Value Unvested at December 26, 2015 — $ — Granted 119,155 $ 30.25 Vested — $ — Canceled/forfeited — $ — Unvested at June 25, 2016 119,155 $ 30.25
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: Three Months Ended Six Months Ended June 25, 2016 June 25, 2016 Expected dividend yield 0.0 % 0.0 % Weighted average expected volatility 31.8 % 32.6 % Weighted average risk-free interest rate 1.1 % 1.2 % Expected holding period 4.00 years 4.00 years
Restricted Shares [Member]
Summary of Restricted Shares and Restricted Share Units	The following table summarizes restricted shares for the 2009 Plan as of June 25, 2016 and changes during the six month period then ended: Number of Unvested Restricted Shares Weighted Average Grant Date Fair Value Unvested at December 26, 2015 398,562 $ 42.65 Granted 137,242 $ 30.11 Vested (83,275 ) $ 46.84 Canceled/forfeited (64,931 ) $ 44.79 Unvested at June 25, 2016 387,598 $ 36.95
Restricted Share Units [Member]
Summary of Restricted Shares and Restricted Share Units	The following table summarizes restricted share units for the 2009 Plan as of June 25, 2016 and changes during the six month period then ended: Number of Unvested Weighted Unvested at December 26, 2015 11,280 $ 37.25 Granted 940 $ 29.98 Vested (8,460 ) $ 37.25 Canceled/forfeited — $ — Unvested at June 25, 2016 3,760 $ 35.43

Net Income Per Share (Tables)

Net Income Per Share (Tables)	6 Months Ended
	Jun. 25, 2016
Earnings Per Share [Abstract]
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): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Numerator: Net income $ 10,433 $ 14,241 $ 25,215 $ 32,941 Denominator: Basic weighted average common shares outstanding 23,763,934 29,230,046 24,283,135 29,363,823 Effect of dilutive securities: Stock options 71,341 101,446 72,356 112,515 Restricted shares 97,167 122,635 114,892 183,610 Performance share units 5,086 — 2,627 — Restricted share units 1,450 1,328 1,008 1,452 Diluted weighted average common shares outstanding 23,938,978 29,455,455 24,474,018 29,661,400 Basic net income per common share $ 0.44 $ 0.49 $ 1.04 $ 1.12 Diluted net income per common share $ 0.44 $ 0.48 $ 1.03 $ 1.11

Segment Data (Tables)

Segment Data (Tables)	6 Months Ended
	Jun. 25, 2016
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): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Net sales: Retail $ 288,290 $ 278,200 $ 576,302 $ 566,183 Direct 32,773 30,346 68,625 65,190 Manufacturing 20,778 24,664 41,338 46,492 Segment net sales 341,841 333,210 686,265 677,865 Elimination of intersegment revenues (9,124 ) (10,872 ) (16,774 ) (18,692 ) Net sales $ 332,717 $ 322,338 $ 669,491 $ 659,173 Income (Loss) from operations: Retail $ 50,469 $ 51,613 $ 107,132 $ 107,672 Direct 4,500 5,587 9,686 10,652 Manufacturing (1) (1,822 ) (1,510 ) (2,084 ) (1,211 ) Corporate costs (2) (32,423 ) (32,126 ) (66,748 ) (62,594 ) Income from operations $ 20,724 $ 23,564 $ 47,986 $ 54,519 (1) Manufacturing loss from operations for the three and six months ended June 27, 2015 includes a $1.4 million charge for accounts receivable for one wholesale customer which were deemed uncollectible. (2) Corporate costs include (in thousands): Three Months Ended Six Months Ended June 25, 2016 June 27, 2015 June 25, 2016 June 27, 2015 Depreciation and amortization expenses $ 8,965 $ 9,155 $ 18,634 $ 18,035 Canada stores closing costs (a) 1,864 — 2,963 — Cost reduction project (b) 1,492 — 1,492 — Super Supplements conversion costs (c) — — 1,275 — Reinvention strategy costs (d) — — 541 — Management realignment charges (e) — 2,174 — 2,174 Integration costs (f) — 410 — 770 (a) Costs primarily include lease termination charges. (b) Outside consulting costs relating to a project to identify and implement cost reduction opportunities. (c) Costs primarily related to the closure of the Seattle distribution center. (d) The costs represent outside consultants fees in connection with the Company’s “reinvention strategy”. (e) Management realignment charges primarily consist of severance, sign-on bonuses, recruiting and relocation costs. (f) Represents integration costs related to the acquisition of Nutri-Force, consisting primarily of professional fees.

Fair Value of Financial Instr27

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 25, 2016
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Convertible Notes	The following table contains information of the Company’s Convertible Notes (in thousands): June 25, 2016 December 26, 2015 Fair Value $ 116,896 $ 119,784 Carrying Value 118,067 115,410

Inventories - Components of Inv

Inventories - Components of Inventories (Detail) - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Inventory Disclosure [Abstract]
Finished goods	$ 209,522	$ 211,879
Work-in-process	7,139	6,180
Raw materials	13,595	8,771
Total inventories	$ 230,256	$ 226,830

Goodwill and Intangible Asset29

Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Gross Carrying Amount	$ 243,269	$ 243,269
Goodwill, Net	243,269	243,269
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Accumulated Amortization	5,426	4,608
Intangible assets, Definite-lived, Net	18,218
Intangible Assets, Net (Including Goodwill) [Abstract]
Goodwill and Intangible Assets, Gross Carrying Amount	335,318	335,147
Goodwill and Intangible Assets, Net	329,892	330,539
Tradenames [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Tradenames - Indefinite-lived, Gross Carrying Amount	68,405	68,405
Intangible assets, Tradenames - Indefinite-lived, Net	68,405	68,405
Brands [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Definite-lived, Gross Carrying Amount	10,000	10,000
Intangible assets, Accumulated Amortization	1,157	880
Intangible assets, Definite-lived, Net	8,843	9,120
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Definite-lived, Gross Carrying Amount	7,500	7,500
Intangible assets, Accumulated Amortization	781	594
Intangible assets, Definite-lived, Net	6,719	6,906
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Definite-lived, Gross Carrying Amount	4,844	4,673
Intangible assets, Accumulated Amortization	2,946	2,722
Intangible assets, Definite-lived, Net	1,898	1,951
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Definite-lived, Gross Carrying Amount	1,300	1,300
Intangible assets, Accumulated Amortization	542	412
Intangible assets, Definite-lived, Net	$ 758	$ 888

Goodwill and Intangible Asset30

Goodwill and Intangible Assets - Additional Information (Detail)	6 Months Ended
	Jun. 25, 2016
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of definite-lived intangible assets, years	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of definite-lived intangible assets, years	20 years

Goodwill and Intangible Asset31

Goodwill and Intangible Assets - Expected Amortization Expense on Definite-Lived Intangible Assets (Detail) $ in Thousands	Jun. 25, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of Fiscal 2016	$ 715
Fiscal 2,017	1,430
Fiscal 2,018	1,430
Fiscal 2,019	1,430
Fiscal 2,020	1,430
Thereafter	11,783
Intangible assets, Definite-lived, Net	$ 18,218

Accrued Expenses and Other Cu32

Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Payables and Accruals [Abstract]
Accrued salaries and related expenses	$ 10,781	$ 10,115
Sales tax payable and related expenses	6,857	6,975
Deferred sales	5,969	20,483
Accrued fixed asset additions	4,332	5,842
Other accrued expenses	30,248	24,844
Accrued expenses and other current liabilities	$ 58,187	$ 68,259

Credit Arrangements - Additiona

Credit Arrangements - Additional Information (Detail) - USD ($)	Dec. 09, 2015	Jun. 25, 2016	Dec. 26, 2015	Jun. 27, 2015
Debt Instrument [Line Items]
Outstanding debt		$ 15,000,000	$ 8,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding debt		$ 15,000,000	$ 8,000,000
Revolving Credit Facility, maturity date		Oct. 11, 2018
Revolving Credit Facility, current borrowing capacity		$ 90,000,000
Revolving Credit Facility, maximum borrowing capacity		150,000,000
Maximum borrowings under Revolving Credit Facility		21,000,000		$ 27,000,000
Revolving Credit Facility, unused available line of credit		$ 72,100,000
Revolving Credit Facility, interest rate description		Borrowings under the Revolving Credit Facility
Percentage of aggregate borrowings facility limit		50.00%
Weighted average interest rate		1.74%		1.44%
Percentage of commitment fee on undrawn portion of Revolving Credit Facility		0.25%	0.25%
Revolving Credit Facility [Member] | Alternative Base Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate, basis spread		0.25%
Revolving Credit Facility [Member] | Alternative Base Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate, basis spread		0.50%
Revolving Credit Facility [Member] | Adjusted Eurodollar Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate, basis spread		1.25%
Revolving Credit Facility [Member] | Adjusted Eurodollar Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate, basis spread		1.50%
Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Principal	$ 143,800,000
Debt instrument, interest rate	2.25%
Debt converted into shares of common stock (in shares)	25.1625
Debt instrument, conversion price	$ 1,000
Stock, initial conversion price per share (in dollars per share)	$ 39.74
Debt instrument, effective interest rate on debt discount	3.80%
Convertible note hedge transactions amount paid	$ 26,400,000
Proceeds from sale of warrants	$ 13,000,000
Strike price of warrant (in dollars per share)	$ 52.99
Net proceeds from Convertible Notes and related transactions	$ 125,700,000
Commissions and offering costs	$ 4,600,000

Credit Arrangements - Component

Credit Arrangements - Components of Convertible Notes (Details) - USD ($)	Jun. 25, 2016	Dec. 26, 2015	Dec. 09, 2015
Liability component:
Net carrying amount	$ 118,067,000	$ 115,410,000
Equity component:
Net carrying amount	118,067,000	115,410,000
Convertible Senior Notes Due 2020 [Member]
Liability component:
Principal			$ 143,800,000
Convertible Senior Notes Due 2020 [Member] | Equity Component [Member]
Liability component:
Conversion feature	24,800,000	24,800,000
Net carrying amount	24,948,000	24,948,000
Equity component:
Conversion feature	24,800,000	24,800,000
Equity portion of debt issuance costs	(793,000)	(793,000)
Deferred taxes	941,000	941,000
Net carrying amount	24,948,000	24,948,000
Convertible Senior Notes Due 2020 [Member] | Liability Component [Member]
Liability component:
Principal	143,750,000	143,750,000
Conversion feature	(24,800,000)	(24,800,000)
Liability portion of debt issuance costs	(3,802,000)	(3,800,000)
Amortization	2,919,000	260,000
Net carrying amount	118,067,000	115,410,000
Equity component:
Conversion feature	(24,800,000)	(24,800,000)
Net carrying amount	$ 118,067,000	$ 115,410,000

Credit Arrangements - Interest

Credit Arrangements - Interest Expense, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Debt Instrument [Line Items]
Amortization of debt discount on convertible notes			$ 2,278	$ 0
Amortization of deferred financing fees	$ 235	$ 40	472	79
Interest income	0	(1)	0	(1)
Interest expense, net	2,352	179	4,614	343
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest / fees on convertible notes, revolving credit facility, and other interest	140	140	227	265
Convertible Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Amortization of debt discount on convertible notes	1,144	0	2,278	0
Interest / fees on convertible notes, revolving credit facility, and other interest	$ 833	$ 0	$ 1,637	$ 0

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 25, 2016USD ($)$ / sharesshares	Jun. 27, 2015USD ($)	Jun. 25, 2016USD ($)Plan$ / sharesshares	Jun. 27, 2015USD ($)	Dec. 26, 2015shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans | Plan			2
Treasury stock (in shares) | shares	152,834		152,834		120,134
Intrinsic value of options exercised				$ 0.8
Cash received from options exercised				1
Compensation expense attributable to stock-based compensation	$ 1.8	$ 1.3	$ 3.5	3.5
Remaining unrecognized stock based compensation expense for non-vested stock options, restricted shares and restricted shares units to be expensed in future periods	11.1		$ 11.1
Weighted average recognition period for non-vested stock options, restricted shares and restricted shares units			2 years
Estimated value of future forfeitures for stock options, restricted shares and restricted share units	$ 1		$ 1
Weighted-average grant date fair value for stock options (in dollars per share) | $ / shares	$ 7.89		$ 8.29
Treasury stock purchased in settlement of employees' tax obligations (in shares) | shares			32,700
Treasury stock purchased in settlement of employees' tax obligations, value			$ 1
2006 and 2009 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available to grant under both plans (in shares) | shares	2,106,138		2,106,138
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of restricted shares vested			$ 2.5	5.6
Performance Share Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Performance Share Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			150.00%
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of restricted shares vested			$ 0.3	$ 0.5

Stock Based Compensation - Summ

Stock Based Compensation - Summary of Restricted Shares, Performance Share Units, and Restricted Share Units (Detail)	6 Months Ended
	Jun. 25, 2016$ / sharesshares
Restricted Shares [Member]
Number of Unvested Shares
Unvested at December 26, 2015 (in shares) | shares	398,562
Granted (in shares) | shares	137,242
Vested (in shares) | shares	(83,275)
Canceled/forfeited (in shares) | shares	(64,931)
Unvested at June 25, 2016 (in shares) | shares	387,598
Weighted Average Grant Date Fair Value
Unvested at December 26, 2015 (in dollars per share) | $ / shares	$ 42.65
Granted (in dollars per share) | $ / shares	30.11
Vested (in dollars per share) | $ / shares	46.84
Canceled/forfeited (in dollars per share) | $ / shares	44.79
Unvested at June 25, 2016 (in dollars per share) | $ / shares	$ 36.95
Performance Share Units [Member]
Number of Unvested Shares
Unvested at December 26, 2015 (in shares) | shares	0
Granted (in shares) | shares	119,155
Vested (in shares) | shares	0
Canceled/forfeited (in shares) | shares	0
Unvested at June 25, 2016 (in shares) | shares	119,155
Weighted Average Grant Date Fair Value
Unvested at December 26, 2015 (in dollars per share) | $ / shares	$ 0
Granted (in dollars per share) | $ / shares	30.25
Vested (in dollars per share) | $ / shares	0
Canceled/forfeited (in dollars per share) | $ / shares	0
Unvested at June 25, 2016 (in dollars per share) | $ / shares	$ 30.25
Restricted Share Units [Member]
Number of Unvested Shares
Unvested at December 26, 2015 (in shares) | shares	11,280
Granted (in shares) | shares	940
Vested (in shares) | shares	(8,460)
Canceled/forfeited (in shares) | shares	0
Unvested at June 25, 2016 (in shares) | shares	3,760
Weighted Average Grant Date Fair Value
Unvested at December 26, 2015 (in dollars per share) | $ / shares	$ 37.25
Granted (in dollars per share) | $ / shares	29.98
Vested (in dollars per share) | $ / shares	37.25
Canceled/forfeited (in dollars per share) | $ / shares	0
Unvested at June 25, 2016 (in dollars per share) | $ / shares	$ 35.43

Stock Based Compensation - Su38

Stock Based Compensation - Summary of Stock Options (Detail) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 25, 2016USD ($)$ / sharesshares
Number of Options
Outstanding at December 26, 2015, Number of Options (in shares) | shares	284,838
Granted, Number of Options (in shares) | shares	217,369
Exercised, Number of Options (in shares) | shares	(558)
Canceled/forfeited, Number of Options (in shares) | shares	(11,133)
Outstanding at June 25, 2016, Number of Options (in shares) | shares	490,516
Vested or expected to vest at June 25, 2016, Number of Options (in shares) | shares	475,253
Vested and exercisable at June 25, 2016, Number of Options (in shares) | shares	270,647
Weighted Average Exercise Price
Outstanding at December 26, 2015, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 22.65
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares	30.25
Exercised, Weighted Average Exercise Price (in dollars per share) | $ / shares	13.43
Canceled/forfeited, Weighted Average Exercise Price (in dollars per share) | $ / shares	34.19
Outstanding at June 25, 2016, Weighted Average Exercise Price (in dollars per share) | $ / shares	25.76
Vested or expected to vest at June 25, 2016, Weighted Average Exercise Price (in dollars per share) | $ / shares	25.76
Vested and exercisable at June 25, 2016, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 21.89
Outstanding at June 25, 2016, Weighted Average Remaining Contractual Life (years)	5 years 6 months
Vested or expected to vest at June 25, 2016, Weighted Average Remaining Contractual Life (years)	5 years 6 months
Vested and exercisable at June 25, 2016, Weighted Average Remaining Contractual Life (years)	2 years 1 month 13 days
Outstanding at June 25, 2016, Aggregate Intrinsic Value | $	$ 2,749
Vested and exercisable at June 25, 2016, Aggregate Intrinsic Value | $	$ 2,746

Stock Based Compensation - Su39

Stock Based Compensation - Summary of Fair Value Option Grant Using Black-Scholes Option-Pricing Model (Detail)	3 Months Ended	6 Months Ended
	Jun. 25, 2016	Jun. 25, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected dividend yield	0.00%	0.00%
Weighted average expected volatility	31.80%	32.60%
Weighted average risk-free interest rate	1.10%	1.20%
Expected holding period	4 years	4 years

Advertising Costs - Additional

Advertising Costs - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Other Income and Expenses [Abstract]
Advertising expense	$ 6.3	$ 4.9	$ 12.4	$ 11.5

Net Income Per Share - Calculat

Net Income Per Share - Calculation of Basic and Diluted Net Income Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net income	$ 10,433	$ 14,241	$ 25,215	$ 32,941
Basic weighted average common shares outstanding (in shares)	23,763,934	29,230,046	24,283,135	29,363,823
Diluted weighted average common shares outstanding (in shares)	23,938,978	29,455,455	24,474,018	29,661,400
Basic net income per common share (in dollars per share)	$ 0.44	$ 0.49	$ 1.04	$ 1.12
Diluted net income per common share (in dollars per share)	$ 0.44	$ 0.48	$ 1.03	$ 1.11
Stock Options [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Effect of dilutive securities (in shares)	71,341	101,446	72,356	112,515
Restricted Shares [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Effect of dilutive securities (in shares)	97,167	122,635	114,892	183,610
Performance Share Units [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Effect of dilutive securities (in shares)	5,086	0	2,627	0
Restricted Share Units [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Effect of dilutive securities (in shares)	1,450	1,328	1,008	1,452

Net Income Per Share - Addition

Net Income Per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Stock Options and Restricted Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0	3,657	5,080	6,836

Share Repurchase Programs - Add

Share Repurchase Programs - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Equity [Abstract]
Purchase of common stock under share repurchase programs	$ 300,000,000		$ 300,000,000
Stock repurchase program, period in force			3 years
Number of shares repurchased and retired (in shares)	7,486,306		7,486,306
Total shares repurchased, value	$ 254,900,000		$ 254,900,000
Stock repurchased and retired during period (in shares)	304,943	226,332	1,739,484	626,332
Stock repurchased and retired during period, value	$ 8,700,000	$ 9,000,000	$ 51,000,000	$ 25,500,000
Common stock shares repurchased price per share (in dollars per share)	$ 28.54	$ 39.76	$ 29.33	$ 40.78

Segment Data - Additional Infor

Segment Data - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016USD ($)	Jun. 27, 2015USD ($)	Jun. 25, 2016USD ($)Stock_UnitSegment	Jun. 27, 2015USD ($)	Dec. 26, 2015USD ($)
Segment Reporting Information [Line Items]
Number of business segments | Segment			3
Number of SKUs available for online access | Stock_Unit			17,400
Goodwill	$ 243,269		$ 243,269		$ 243,269
Identifiable assets	740,532		740,532		748,691
Capital expenditures			21,005	$ 20,526
Retail [Member]
Segment Reporting Information [Line Items]
Goodwill	165,300		165,300
Direct [Member]
Segment Reporting Information [Line Items]
Goodwill	45,300		45,300
Manufacturing [Member]
Segment Reporting Information [Line Items]
Goodwill	32,600		32,600
Identifiable assets	88,500		88,500		88,400
Capital expenditures			1,100	2,300
Long lived assets	59,800		59,800		$ 60,400
Depreciation and amortization expenses	$ 400	$ 400	$ 800	$ 700

Segment Data - Table of Key Fin

Segment Data - Table of Key Financial Information of Company's Business Segments (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016USD ($)	Jun. 27, 2015USD ($)Customer	Jun. 25, 2016USD ($)	Jun. 27, 2015USD ($)Customer
Revenue from External Customer [Line Items]
Net sales	$ 332,717	$ 322,338	$ 669,491	$ 659,173
Income (loss) from operations	20,724	23,564	47,986	54,519
Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	341,841	333,210	686,265	677,865
Operating Segments [Member] | Retail [Member]
Revenue from External Customer [Line Items]
Net sales	288,290	278,200	576,302	566,183
Income (loss) from operations	50,469	51,613	107,132	107,672
Operating Segments [Member] | Direct [Member]
Revenue from External Customer [Line Items]
Net sales	32,773	30,346	68,625	65,190
Income (loss) from operations	4,500	5,587	9,686	10,652
Operating Segments [Member] | Manufacturing [Member]
Revenue from External Customer [Line Items]
Net sales	20,778	24,664	41,338	46,492
Income (loss) from operations	(1,822)	(1,510)	(2,084)	(1,211)
Operating Segments [Member] | Manufacturing [Member] | Accounts Receivable [Member]
Revenue from External Customer [Line Items]
Charge for accounts receivable deemed uncollectable		$ 1,400		$ 1,400
Number of wholesale customers | Customer		1		1
Elimination of Intersegment Revenues [Member]
Revenue from External Customer [Line Items]
Net sales	(9,124)	$ (10,872)	(16,774)	$ (18,692)
Corporate Costs [Member]
Revenue from External Customer [Line Items]
Income (loss) from operations	$ (32,423)	$ (32,126)	$ (66,748)	$ (62,594)

Segment Data - Table of Key F46

Segment Data - Table of Key Financial Information of Company's Business Segments , Components of Corporate Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Revenue from External Customer [Line Items]
Depreciation and amortization expenses			$ 19,440	$ 18,750
Corporate Costs [Member]
Revenue from External Customer [Line Items]
Depreciation and amortization expenses	$ 8,965	$ 9,155	18,634	18,035
Canada stores closing costs	1,864	0	2,963	0
Cost reduction project	1,492	0	1,492	0
Super Supplements conversion costs	0	0	1,275	0
Reinvention strategy costs	0	0	541	0
Management realignment charges	0	2,174	0	2,174
Corporate Costs [Member] | Nutri-Force [Member]
Revenue from External Customer [Line Items]
Integration costs	$ 0	$ 410	$ 0	$ 770

Fair Value of Financial Instr47

Fair Value of Financial Instruments - Schedule of Fair Value of Convertible Notes (Details) - Convertible Notes [Member] - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 116,896	$ 119,784
Carrying Value	$ 118,067	$ 115,410