Sprouts Farmers Market (SFM) 10-Q 1 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 29, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	SFM
Entity Registrant Name	SPROUTS FARMERS MARKET, INC.
Entity Central Index Key	1,575,515
Current Fiscal Year End Date	--12-30
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		127,603,836

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 17,175	$ 19,479
Accounts receivable, net	34,631	25,893
Inventories	253,045	229,542
Prepaid expenses and other current assets	37,523	24,593
Total current assets	342,374	299,507
Property and equipment, net of accumulated depreciation	773,348	713,031
Intangible assets, net of accumulated amortization	195,154	196,205
Goodwill	368,078	368,078
Other assets	16,010	4,782
Total assets	1,694,964	1,581,603
Current liabilities:
Accounts payable and other accrued liabilities	245,928	244,853
Accrued salaries and benefits	43,433	45,623
Current portion of capital and financing lease obligations	7,398	9,238
Total current liabilities	296,759	299,714
Long-term capital and financing lease obligations	120,670	125,489
Long-term debt	435,000	348,000
Other long-term liabilities	144,401	130,640
Deferred income tax liability	56,839	27,066
Total liabilities	1,053,669	930,909
Commitments and contingencies (Note 8)
Stockholders’ equity:
Undesignated preferred stock; $0.001 par value; 10,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.001 par value; 200,000,000 shares authorized, 127,603,836 shares issued and outstanding, September 30, 2018; 132,823,981 shares issued and outstanding, December 31, 2017	127	132
Additional paid-in capital	653,509	620,788
Accumulated other comprehensive income (loss)	4,567	(784)
(Accumulated deficit) retained earnings	(16,908)	30,558
Total stockholders’ equity	641,295	650,694
Total liabilities and stockholders’ equity	$ 1,694,964	$ 1,581,603

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Undesignated preferred stock, par value	$ 0.001	$ 0.001
Undesignated preferred stock, shares authorized	10,000,000	10,000,000
Undesignated preferred stock, shares issued	0	0
Undesignated preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	127,603,836	132,823,981
Common stock, shares outstanding	127,603,836	132,823,981

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Income Statement [Abstract]
Net sales	$ 1,329,109	$ 1,206,059	$ 3,937,998	$ 3,520,679
Cost of sales, buying and occupancy	946,734	859,650	2,788,159	2,494,998
Gross profit	382,375	346,409	1,149,839	1,025,681
Direct store expenses	281,365	250,191	816,933	715,336
Selling, general and administrative expenses	43,944	39,955	128,828	110,312
Store pre-opening costs	3,819	2,456	9,414	10,055
Store closure and other costs	461	803	497	992
Income from operations	52,786	53,004	194,167	188,986
Interest expense	(7,419)	(5,609)	(20,028)	(15,447)
Other income		162	325	388
Income before income taxes	45,367	47,557	174,464	173,927
Income tax provision	(7,867)	(16,071)	(28,631)	(55,186)
Net income	$ 37,500	$ 31,486	$ 145,833	$ 118,741
Net income per share:
Basic	$ 0.30	$ 0.23	$ 1.13	$ 0.87
Diluted	$ 0.29	$ 0.23	$ 1.12	$ 0.86
Weighted average shares outstanding:
Basic	126,855	134,320	129,572	136,063
Diluted	127,627	136,770	130,537	138,860

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 37,500	$ 31,486	$ 145,833	$ 118,741
Other comprehensive income, net of tax
Unrealized gain on cash flow hedging activities, net of income tax of $299, $0, $1,851 and $0	865		5,351
Total other comprehensive income	865		5,351
Comprehensive income	$ 38,365	$ 31,486	$ 151,184	$ 118,741

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Statement Of Income And Comprehensive Income [Abstract]
Unrealized gains on cash flow hedging activities, net of income tax	$ 299	$ 0	$ 1,851	$ 0

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	(Accumulated deficit) Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Jan. 01, 2017	$ 672,909	$ 140	$ 597,269	$ 75,500
Beginning Balance, Shares at Jan. 01, 2017		140,002,242
Net income	158,440			158,440
Other comprehensive income (loss)	(784)				$ (784)
Issuance of shares under stock plans	9,300	$ 2	9,298
Issuance of shares under stock plans, Shares		2,144,669
Repurchase and retirement of common stock	(203,392)	$ (10)		(203,382)
Repurchase and retirement of common stock, Shares		(9,696,819)
Equity-based compensation	14,221		14,221
Ending Balance at Dec. 31, 2017	650,694	$ 132	620,788	30,558	(784)
Ending Balance, Shares at Dec. 31, 2017		132,450,092
Net income	145,833			145,833
Other comprehensive income (loss)	5,351				5,351
Issuance of shares under stock plans	21,051	$ 3	21,048
Issuance of shares under stock plans, Shares		3,170,818
Repurchase and retirement of common stock	$ (193,307)	$ (8)		(193,299)
Repurchase and retirement of common stock, Shares	(8,411,575)	(8,411,575)
Equity-based compensation	$ 11,673		11,673
Ending Balance at Sep. 30, 2018	$ 641,295	$ 127	$ 653,509	$ (16,908)	$ 4,567
Ending Balance, Shares at Sep. 30, 2018		127,209,335

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Cash flows from operating activities
Net income	$ 145,833	$ 118,741
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	81,959	70,875
Accretion of asset retirement obligation and closed store reserve	219	168
Amortization of financing fees and debt issuance costs	658	347
Loss on disposal of property and equipment	404	820
Equity-based compensation	11,673	10,325
Deferred income taxes	29,773	23,245
Changes in operating assets and liabilities:
Accounts receivable	(10,299)	1,660
Inventories	(23,503)	(17,752)
Prepaid expenses and other current assets	(13,758)	(3,734)
Other assets	(3,945)	(702)
Accounts payable and other accrued liabilities	3,240	35,957
Accrued salaries and benefits	(2,130)	8,360
Other long-term liabilities	15,342	10,659
Cash flows from operating activities	235,466	258,969
Cash flows from investing activities
Purchases of property and equipment	(148,433)	(158,459)
Proceeds from sale of property and equipment	1	30
Cash flows used in investing activities	(148,432)	(158,429)
Cash flows from financing activities
Proceeds from revolving credit facilities	180,000	134,000
Payments on revolving credit facilities	(93,000)	(40,000)
Payments on capital and financing lease obligations	(3,349)	(3,053)
Payments of deferred financing costs	(2,131)
Cash from landlords related to capital and financing lease obligations	2,113	300
Repurchase of common stock	(193,307)	(192,000)
Proceeds from exercise of stock options	21,051	6,640
Other	(59)
Cash flows used in financing activities	(88,682)	(94,113)
(Decrease) increase in cash, cash equivalents, and restricted cash	(1,648)	6,427
Cash, cash equivalents, and restricted cash at beginning of the period	19,479	12,465	$ 12,465
Cash, cash equivalents, and restricted cash at the end of the period	17,831	18,892	$ 19,479
Supplemental disclosure of cash flow information
Cash paid for interest	19,784	15,052
Cash paid for income taxes	15,177	25,710
Supplemental disclosure of non-cash investing and financing activities
Property and equipment in accounts payable	15,435	13,476
Property acquired through capital and financing lease obligations	$ 8,911	$ 5,512

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation Sprouts Farmers Market, Inc., a Delaware corporation, through its subsidiaries, operates as a healthy grocery store that offers fresh, natural and organic food through a complete shopping experience that includes fresh produce, bulk foods, vitamins and supplements, packaged groceries, meat and seafood, deli, baked goods, dairy products, frozen foods, beer and wine, natural body care and household items catering to consumers’ growing interest in health and wellness. The “Company” is used to refer collectively to Sprouts Farmers Market, Inc. and unless the context otherwise requires, its subsidiaries. The accompanying unaudited consolidated financial statements include the accounts of the Company in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial statements and are in the form prescribed by the Securities and Exchange Commission in instructions to Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, the accompanying consolidated financial statements reflect all adjustments, consisting of normal recurring adjustments, considered necessary for a fair statement of the Company's financial position, results of operations and cash flows for the periods indicated. All material intercompany accounts and transactions have been eliminated in consolidation. Interim results are not necessarily indicative of results for any other interim period or for a full fiscal year. The information included in these consolidated financial statements and notes thereto should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations included herein and Management’s Discussion and Analysis of Financial Condition and Results of Operations and the consolidated financial statements and notes thereto for the fiscal year ended December 31, 2017 (“fiscal year 2017”) included in the Company’s Annual Report on Form 10-K, filed on February 22, 2018. The year-end balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The Company reports its results of operations on a 52- or 53-week fiscal calendar ending on the Sunday closest to December 31. The fiscal year ending December 30, 2018 (“fiscal year 2018”) and fiscal year 2017 are 52-week years. The Company reports its results of operations on a 13-week quarter, except for 53-week fiscal years. Certain reclassifications of amounts reported in prior periods have been made to conform with the current period presentation. All dollar amounts are in thousands, unless otherwise noted.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Revenue Recognition The Company has adopted Accounting Standards Codification (“ASC”) 606, “Revenue from Contracts with Customers” in the first quarter of fiscal year 2018, with a date of initial application of January 1, 2018, using the modified retrospective approach. Comparative information presented has not been adjusted and continues to be reported under ASC 605. The Company applied ASC 606 to all of its contracts with customers. As a result of the adoption, there is no impact to any financial statement line item, and the Company has recorded no impact to opening retained earnings as of January 1, 2018. The Company does not have any material contract assets or receivables from contracts with customers, any revenue recognized in the current period from performance obligations satisfied in previous periods, any contract performance obligations, or any material costs to obtain or fulfill a contract as of September 30, 2018. The Company had a net gift card liability balance of $6.8 million as of September 30, 2018 and $13.1 million as of December 31, 2017. During the thirty-nine weeks ended September 30, 2018, the Company recognized $16.1 million in sales related to gift cards redeemed by customers. Revenue is recognized at the point of sale. The Company’s performance obligations are satisfied upon the transfer of goods to the customer, at the point of sale, and payment from customers is also due at the time of sale. Proceeds from the sale of gift cards are recorded as a liability at the time of sale, and recognized as sales when they are redeemed by the customer and the performance obligation is satisfied by the Company. The nature of goods the Company transfers to customers at the point of sale are inventories, consisting of merchandise purchased for resale. Restricted Cash Restricted cash relates to defined benefit plan forfeitures of approximately $0.7 million and is included in prepaid expenses and other current assets in the consolidated balance sheets. Recently Adopted Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers.” ASU No. 2014-09 provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, and estimating the amount of variable consideration to include in the transaction price attributable to each separate performance obligation. Subsequent to the initial standards, the FASB has also issued several ASUs to clarify specific revenue recognition topics. The Company adopted ASC 606 effective January 1, 2018 using the modified retrospective approach. As noted above, there is no impact to any financial statement line item as a result of the adoption, and the Company has recorded no impact to opening retained earnings as of January 1, 2018. The Company has added additional disclosures of disaggregated revenue by type in Note 13, “Segments.” In March 2016, the FASB issued ASU No. 2016-04, “Liabilities-Extinguishments of Liabilities (Subtopic 405-20): Recognition of breakage for certain prepaid stored-value products.” ASU No. 2016-04 provides a narrow scope exception to the guidance in Subtopic 405-20 to require that stored-value breakage be accounted for consistently with the breakage guidance in Topic 606. The amendments in this update contain specific guidance for derecognition of prepaid stored-value product liabilities, thereby eliminating the current and potential future diversity. The guidance was effective for the Company for its fiscal year 2018. The Company adopted this guidance using the modified retrospective approach. As noted above, there is no impact to any financial statement line item as a result of the adoption, and the Company recorded no impact to opening retained earnings as of January 1, 2018. In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” This update provides clarifications on the cash flow classification for eight specific cash flow issues: debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (COLIs) (including bank-owned life insurance policies (BOLIs)); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. Adoption of this guidance took place during the first quarter of fiscal year 2018, using the retrospective transition method, and the adoption had no impact on the Company’s consolidated financial statements or disclosures. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” The amendments in this update require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Adoption of this guidance took place prospectively during the first quarter of 2018, and the adoption did not have a material impact on the Company’s consolidated financial statements or disclosures. In May 2017, the FASB issued ASU No. 2017-09, “Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting.” The amendments in this update provide guidance about which changes to the terms or conditions of a share-based award require an entity to apply modification accounting in Topic 718. Adoption of this guidance took place prospectively during the first quarter 2018, and the adoption did not have an impact on the Company’s consolidated financial statements or disclosures. In August 2018, the FASB issued ASU No. 2018-15, “Intangibles —Goodwill and Other —Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include internal-use software license). The amendments require an entity in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which service contract implementation costs to capitalize as an asset and which costs to expense. The amendments also require the entity to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangements, which includes reasonably certain renewals. The Company adopted this guidance during the third quarter 2018 using the prospective transition approach. Adoption of the guidance did not have a material impact to the Company's financial statements and resulted in capitalization of implementation costs associated with various technology initiatives which are included in other assets in the consolidated balance sheet as of September 30, 2018. Recently Issued Accounting Pronouncements Not Yet Adopted In February 2016, the FASB issued ASU No. 2016-02, “Leases (ASC 842).” ASU No. 2016-02 requires lessees to recognize a right-of-use asset and corresponding lease liability for all leases with terms greater than twelve months. Recognition, measurement and presentation of expenses will depend on classification as a financing or operating lease. Certain additional quantitative and qualitative disclosures will also be required. This ASU will be effective for the Company beginning with its 2019 fiscal year. While the Company is still evaluating the impact of this ASU, the Company expects it will result in material increases in assets and liabilities in its consolidated balance sheet and enhanced disclosures. In addition, the Company anticipates that the transition of its financing leases to operating leases under the new standard will result in an increase in rent expense, partially offset by reductions to depreciation and interest expense. The Company does not expect that the adoption of the ASU will have an impact on the Company’s cash flows. In January 2017, the FASB issued ASU No. 2017-04, “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” The amendments in this update eliminate the second step of the goodwill impairment test and provide that a n entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. The guidance will be effective for the Company for its fiscal year 2020, with early adoption permitted. The Company does not expect this ASU to materially impact the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-14, “Compensation —Retirement Benefits —Defined Benefit Plans —General (Subtopic 715-20) —Disclosure Framework —Changes to the Disclosure Requirements for Defined Benefit Plans.” The amendments in this update remove disclosures that no longer are considered cost-beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. The guidance will be effective for the Company for its fiscal year 2020, with early adoption permitted. The Company does not expect this ASU to materially impact the Company’s disclosures. No other new accounting pronouncements issued or effective during the thirty-nine weeks ended September 30, 2018 had, or are expected to have, a material impact on the Company’s consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	3. Fair Value Measurements The Company records its financial assets and liabilities in accordance with the framework for measuring fair value in accordance with GAAP. This framework establishes a fair value hierarchy that prioritizes the inputs used to measure fair value: Level 1: Quoted prices for identical instruments in active markets. Level 2: Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 3: Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Fair value measurements of nonfinancial assets and nonfinancial liabilities are primarily used in the impairment analysis of goodwill, indefinite-lived intangible assets and long-lived assets. The following tables present the fair value hierarchy for the Company’s financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017: September 30, 2018 Level 1 Level 2 Level 3 Total Long-term debt $ — $ 435,000 $ — $ 435,000 Total liabilities $ — $ 435,000 $ — $ 435,000 Interest rate swap asset $ — $ 6,159 $ — $ 6,159 Total assets $ — $ 6,159 $ — $ 6,159 December 31, 2017 Level 1 Level 2 Level 3 Total Long-term debt $ — $ 348,000 $ — $ 348,000 Interest rate swap liability — 1,064 — 1,064 Total liabilities $ — $ 349,064 $ — $ 349,064 The Company’s interest rate swaps are considered Level 2 in the hierarchy and are valued using an income approach. Expected future cash flows are converted to a present value amount based on market expectations of the yield curve on floating interest rates, which is readily available on public markets. Cash, cash equivalents, and restricted cash, accounts receivable, prepaid expenses and other current assets, accounts payable and other accrued liabilities and, accrued salaries and benefits approximate fair value because of the short maturity of those instruments. Based on comparable open market transactions, the fair value of the long-term debt approximated carrying value as of September 30, 2018 and December 31, 2017.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	4. Long-Term Debt A summary of long-term debt is as follows: As of Facility Maturity Interest Rate September 30, 2018 December 31, 2017 Senior secured debt $700.0 million Credit Agreement March 27, 2023 Variable $ 435,000 $ — Former Credit Facility April 17, 2020 Variable — 348,000 Total debt 435,000 348,000 Long-term debt $ 435,000 $ 348,000 Senior Secured Revolving Credit Facility March 2018 Refinancing On March 27, 2018, the Company’s subsidiary, Sprouts Farmers Markets Holdings, LLC (“Intermediate Holdings”), as borrower, entered into an amended and restated credit agreement (the “Amended and Restated Credit Agreement”) to amend and restate the Company’s existing senior secured credit facility, dated April 17, 2015 (the “Former Credit Facility”). The Amended and Restated Credit Agreement provides for a revolving credit facility with an initial aggregate commitment of $700.0 million, an increase from $450.0 million from the Former Credit Facility, which may be increased from time to time pursuant to an expansion feature set forth in the Amended and Restated Credit Agreement. Concurrently with the closing of the Amended and Restated Credit Agreement, all commitments under the Former Credit Facility were terminated, resulting in a $0.3 million loss on early extinguishment of debt, recorded in interest expense during the first quarter of fiscal year 2018. The loss was due to the write-off of a proportional amount of deferred financing costs associated with the Former Credit Facility as the result of certain banks exiting the Amended and Restated Credit Agreement in connection with the refinancing. No amounts were outstanding under the Former Credit Facility as of September 30, 2018 The Company capitalized debt issuance costs of $2.1 million related to the refinancing which combined with the remaining $0.7 million debt issuance costs for the Former Credit Facility, are being amortized on a straight-line basis to interest expense over the five-year term of the Amended and Restated Credit Agreement. The Amended and Restated Credit Agreement also provides for a letter of credit subfacility and a $15.0 million swingline facility. Letters of credit issued under the Amended and Restated Credit Agreement reduce its borrowing capacity. Letters of credit totaling $27.0 million have been issued as of September 30, 2018, primarily to support the Company’s insurance programs. Guarantees Obligations under the Amended and Restated Credit Agreement are guaranteed by the Company and all of its current and future wholly-owned material domestic subsidiaries (other than the borrower), and are secured by first-priority security interests in substantially all of the assets of the Company and its subsidiary guarantors, including, without limitation, a pledge by the Company of its equity interest in Intermediate Holdings. Interest and Fees Loans under the Amended and Restated Credit Agreement initially bear interest at LIBOR plus 1.50% per annum. The interest rate margins are subject to adjustment pursuant to a pricing grid based on the Company’s total net leverage ratio, as set forth in the Amended and Restated Credit Agreement. Under the terms of the Amended and Restated Credit Agreement, the Company is obligated to pay a commitment fee on the available unused amount of the commitments between 0.15% to 0.30% per annum, also pursuant to a pricing grid based on the Company’s total net leverage ratio. The interest rate on approximately 57% of outstanding debt under the Amended and Restated Credit Agreement is fixed, reflecting the effects of floating to fixed interest rate swaps (see Note 11, “Derivative Financial Instruments”). Outstanding letters of credit under the Amended and Restated Credit Agreement are subject to a participation fee of 1.50% per annum and an issuance fee of 0.125% per annum. Payments and Borrowings The Amended and Restated Credit Agreement is scheduled to mature, and the commitments thereunder will terminate on March 27, 2023, subject to extensions as set forth therein. The Company may prepay loans and permanently reduce commitments under the Amended and Restated Credit Agreement at any time in agreed-upon minimum principal amounts, without premium or penalty (except LIBOR breakage costs, if applicable). During fiscal year 2017, the Company borrowed $153.0 million under the Former Credit Facility to be used in connection with the Company’s $250.0 million share repurchase program (see Note 9, “Stockholders’ Equity”) and made a total of $60.0 million of principal payments; resulting in total outstanding debt under the Former Credit Facility of $348.0 million at December 31, 2017. During the thirty-nine weeks ended September 30, 2018, the Company borrowed an additional $180.0 million primarily for share repurchases and made a total of $93.0 million of principal payments; resulting in total outstanding debt under the Amended and Restated Credit Agreement of $435.0 million as of September 30, 2018. Covenants The Amended and Restated Credit Agreement contains financial, affirmative and negative covenants. The negative covenants include, among other things, limitations on the Company’s ability to: • incur additional indebtedness; • grant additional liens; • enter into sale-leaseback transactions; • make loans or investments; • merge, consolidate or enter into acquisitions; • pay dividends or distributions; • enter into transactions with affiliates; • enter into new lines of business; • modify the terms of debt or other material agreements; and • change its fiscal year. Each of these covenants is subject to customary and other agreed-upon exceptions. In addition, the Amended and Restated Credit Agreement requires that the Company and its subsidiaries maintain a maximum total net leverage ratio not to exceed 3.25 to 1.00 and minimum interest coverage ratio not to be less than 1.75 to 1.00. Each of these covenants is tested on the last day of each fiscal quarter, starting with the fiscal quarter ended September 30, 2018. The Company was in compliance with all applicable covenants under the Amended and Restated Credit Agreement as of September 30, 2018. Former Credit Facility On April 17, 2015, Intermediate Holdings, as borrower, entered into the Former Credit Facility that provided for a revolving credit facility with an initial aggregate commitment of $450.0 million, subject to an expansion feature set forth therein. The Former Credit Facility also provided for a letter of credit subfacility and a $15.0 million swingline facility. The Former Credit Facility was scheduled to mature, and the commitments thereunder were scheduled to terminate, on April 17, 2020. Loans under the Former Credit Facility bore interest, at the Company’s option, either at adjusted LIBOR plus 1.50% per annum, or a base rate plus 0.50% per annum. The interest rate margins were subject to adjustment pursuant to a pricing grid based on the Company’s total gross leverage ratio, as defined in the Former Credit Facility. Under the terms of the Former Credit Facility, the Company was obligated to pay a commitment fee on the available unused amount of the commitments equal to 0.20% per annum.

Closed Store Reserves

Closed Store Reserves	9 Months Ended
	Sep. 30, 2018
Restructuring And Related Activities [Abstract]
Closed Store Reserves	5. Closed Store Reserves The following is a summary of closed store reserve activity during the thirty-nine weeks ended September 30, 2018 and fiscal year 2017: Thirty-nine Weeks Ended Fiscal Year Ended September 30, 2018 December 31, 2017 Beginning balance $ 811 $ 1,083 Additions — — Usage (320 ) (492 ) Adjustments 85 220 Ending balance $ 576 $ 811 Usage relates to lease payments made during the periods for closed stores.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	6. Income Taxes On December 22, 2017, the legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”) was enacted into law, which changed various corporate income tax provisions within the existing Internal Revenue Code. The most significant changes that impacted the Company were the reduction in the corporate federal income tax rate from 35% to 21% and 100% bonus depreciation for qualified property acquired and placed in service after September 27, 2017 and before January 1, 2023. Under the guidance set forth in the SEC's Staff Accounting Bulletin No. 118 (“SAB 118”), the Company may record provisional amounts for the impact of the Tax Act. As of September 30, 2018, the Company has finalized its 2017 federal income tax return and as such completed the accounting for the income tax effects of the 2017 Tax Act. In accordance with SAB 118, any future adjustments required due to changes in interpretation and guidance that may be issued will be recorded as discrete adjustments to income tax expense in the period in which those adjustments become estimable and finalized. The Company’s effective tax rate decreased to 17.3% for the thirteen weeks ended September 30, 2018 from 33.8% for the thirteen weeks ended October 1, 2017 primarily due to the enactment of the Tax Act as disclosed above, as well as the impact of a tax calculation method change. During the quarter ended September 30, 2018 the Company adopted tax calculation method changes that resulted in the accelerated deduction or deferral of certain items. The method changes were included in the Company’s 2017 tax return that was finalized during the fiscal quarter. As a result, the Company recorded a $2.6 million discrete tax benefit in the third quarter of 2018, which decreased the effective tax rate by 5.7%. The Company’s effective tax rate decreased to 16.4% for the thirty-nine weeks ended September 30, 2018 from 31.7% for the thirty-nine weeks ended October 1, 2017 primarily due to the enactment of the Tax Act disclosed above, as well as the recognition of excess tax benefits related to the exercise of stock options recognized in the income tax provision. The tax calculation method change resulted in a discrete rate benefit of 1.5% for the thirty-nine weeks ended September 30, 2018. Excess tax benefits associated with share-based payment awards are recognized as income tax expense or benefit in the statements of income. The tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur. The income tax benefits resulting from excess tax benefits of share-based payment awards were $1.0 million and $0.2 million for the thirteen weeks ended September 30, 2018 and October 1, 2017, respectively. The income tax benefits resulting from excess tax benefits of share-based payment awards were $12.4 million and $8.4 million for the thirty-nine weeks ended September 30, 2018 and October 1, 2017, respectively.

Related-Party Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Related-Party Transactions	7. Related-Party Transactions A member of the Company’s board of directors is an investor in a company that is a supplier of coffee to the Company for resale. During the thirteen weeks ended September 30, 2018, there were no purchases from this supplier and $2.7 million of purchases during the thirteen weeks ended October 1, 2017. During the thirty-nine weeks ended September 30, 2018 and October 1, 2017, purchases from this supplier were $2.6 million and $8.1 million, respectively. As of September 30, 2018, the Company had The Company’s former Executive Chairman of the Board, who retired from this position in February 2017, has been the chief executive officer, an equity investor, and lender to a technology supplier to the Company. During the thirteen weeks ended September 30, 2018 and October 1, 2017, purchases from this supplier and its predecessors were $1.8 million and $1.6 million, respectively. During the thirty-nine weeks ended September 30, 2018 and October 1, 2017, purchases from this supplier and its predecessors were $4.4 million and $5.2 million, respectively. As of September 30, 2018, and December 31, 2017, the Company had recorded accounts payable due to the supplier of $0.2 million and $0.1 million, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	8. Commitments and Contingencies The Company is exposed to claims and litigation matters arising in the ordinary course of business and uses various methods to resolve these matters that are believed to best serve the interests of the Company’s stakeholders. The Company’s primary contingencies are associated with self-insurance obligations and litigation matters. Self-insurance liabilities require significant judgment and actual claim settlements and associated expenses may differ from the Company’s current provisions for loss. Securities Action On March 4, 2016, a complaint was filed in the Superior Court for the State of Arizona against the Company and certain of its directors and officers on behalf of a purported class of purchasers of shares of the Company’s common stock in the Company’s underwritten secondary public offering which closed on March 10, 2015 (the “March 2015 Offering”). The complaint purports to state claims under Sections 11, 12 and 15 of the Securities Act of 1933, as amended, based on an alleged failure by the Company to disclose adequate information about produce price deflation in the March 2015 Offering documents. The complaint seeks damages on behalf of the purported class in an unspecified amount, rescission, and an award of reasonable costs and attorneys’ fees. After removal to federal court, the plaintiff sought remand, which the court granted in March 2017. On May 25, 2017, the Company filed a Motion to Dismiss in the Superior Court for the State of Arizona, which the court granted in part and denied in part by order entered August 30, 2017. The Company answered the complaint on September 28, 2017. On August 15, 2018, the Company reached an agreement in principle to settle these claims. The parties’ settlement agreement will be presented to the court for approval. If approved by the court, the settlement will be funded from the Company’s directors and officers liability insurance policy and will not have a material impact on the Company’s consolidated financial statements.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Stockholders' Equity	9. Stockholders’ Equity Share Repurchases The following table outlines the common stock share repurchase programs authorized by the Company’s board of directors from time to time, and the related repurchase activity and available authorization as of September 30, 2018. Effective date Expiration date Amount authorized Cost of repurchases Authorization available November 4, 2015 November 4, 2017 $ 150,000 $ 150,000 $ — September 6, 2016 December 31, 2017 $ 250,000 $ 250,000 $ — February 20, 2017 December 31, 2018 $ 250,000 $ 250,000 $ — February 20, 2018 December 31, 2019 $ 350,000 $ 66,707 $ 283,293 The shares under the Company’s repurchase programs may be purchased on a discretionary basis from time to time prior to the applicable expiration date, subject to general business and market conditions and other investment opportunities, through open market purchases, privately negotiated transactions, or other means, including through Rule 10b5-1 trading plans. The board’s authorization of the share repurchase programs does not obligate the Company to acquire any particular amount of common stock, and the repurchase programs may be commenced, suspended, or discontinued at any time. The Company has used borrowings under its Former Credit Facility and Amended and Restated Credit Agreement to assist with the repurchase programs (see Note 4, “Long-Term Debt”). Share repurchase activity under the Company’s repurchase programs for the periods indicated was as follows (total cost in thousands): Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Number of common shares acquired 719,004 3,249,204 8,411,575 9,136,468 Average price per common share acquired $ 21.29 $ 22.16 $ 22.98 $ 21.01 Total cost of common shares acquired $ 15,307 $ 72,000 $ 193,307 $ 192,000 Shares purchased under the Company’s repurchase programs were subsequently retired.

Net Income Per Share

Net Income Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Income Per Share	10. Net Income Per Share The computation of net income per share is based on the number of weighted average shares outstanding during the period. The computation of diluted net income per share includes the dilutive effect of share equivalents consisting of incremental shares deemed outstanding from the assumed exercise of options, assumed vesting of restricted stock units (“RSUs”), assumed vesting of performance stock awards (“PSAs”), and assumed vesting of restricted stock awards (“RSAs”). A reconciliation of the numerators and denominators of the basic and diluted net income per share calculations is as follows (in thousands, except per share amounts): Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Basic net income per share: Net income $ 37,500 $ 31,486 $ 145,833 $ 118,741 Weighted average shares outstanding 126,855 134,320 129,572 136,063 Basic net income per share $ 0.30 $ 0.23 $ 1.13 $ 0.87 Diluted net income per share: Net income $ 37,500 $ 31,486 $ 145,833 $ 118,741 Weighted average shares outstanding - basic 126,855 134,320 129,572 136,063 Dilutive effect of equity-based awards: Assumed exercise of options to purchase shares 341 2,128 484 2,506 RSUs 175 122 193 124 RSAs 82 114 137 102 PSAs 174 86 151 65 Weighted average shares and equivalent shares outstanding 127,627 136,770 130,537 138,860 Diluted net income per share $ 0.29 $ 0.23 $ 1.12 $ 0.86 For the thirteen weeks ended September 30, 2018, the computation of diluted net income per share does not include 0.7 million options and 0.1 million PSAs as those awards would have been antidilutive or were performance awards with performance conditions net yet deemed met. For the thirteen weeks ended October 1, 2017, the computation of diluted net income per share does not include 1.9 million options and 0.1 million PSAs as those awards would have been antidilutive or were unvested performance awards. For the thirty-nine weeks ended September 30, 2018, the computation of diluted net income per share does not include 1.1 million options and 0.1 million PSAs those awards would have been antidilutive or were performance awards with performance conditions net yet deemed met. For the thirty-nine weeks ended October 1, 2017, the computation of diluted net income per share does not include 1.9 million options and 0.1 million PSAs as those awards would have been antidilutive or were unvested performance awards.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	11. Derivative Financial Instruments The Company entered into an interest rate swap agreement in December 2017 to manage its cash flow associated with variable interest rates. This forward contract has been designated and qualifies as a cash flow hedge, and its change in fair value is recorded as a component of other comprehensive income and reclassified into earnings in the same period or periods in which the forecasted transaction occurs. The forward contract consists of five cash flow hedges. To qualify as a hedge, the Company needs to formally document, designate and assess the effectiveness of the transactions that receive hedge accounting. The notional dollar amount of the five outstanding swaps was $250.0 million at September 30, 2018 and December 31, 2017, respectively, under which the Company pays a fixed rate and received a variable rate of interest (cash flow swap). The cash flow swaps hedge the change in interest rates on debt related to fluctuations in interest rates and each have a length of one year and mature annually from 2018 to 2022. These interest rate swaps have been designated and qualify as cash flow hedges and have met the requirements to assume zero ineffectiveness. The Company reviews the effectiveness of its hedging instruments on a quarterly basis. The counterparties to these derivative financial instruments are major financial institutions. The Company evaluates the credit ratings of the financial institutions and believes that credit risk is at an acceptable level. As of September 30, 2018 As of December 31, 2017 Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as hedging instruments Interest rate swaps Other Current Assets and Other Assets $ 6,159 Other Accrued Liabilities and Long-term Liabilities $ 1,064 The gain or loss on these derivative instruments is recognized in other comprehensive income, net of tax, with the portion related to current period interest payments reclassified to interest expense on the consolidated statements of ncome. Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Consolidated Statements of Income Classification Interest income (expense), net $ 176 $ — $ 115 $ —

Comprehensive Income

Comprehensive Income	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Comprehensive Income	12. Comprehensive Income During the thirty-nine weeks ended October 1, 2017, the Company did not record accumulated other comprehensive income. The following table presents the changes in accumulated other comprehensive income for the thirty-nine weeks ended September 30, 2018 Cash Flow Hedges Balance at December 31, 2017 $ (784 ) Other comprehensive income, net of tax Unrealized gain on cash flow hedging activities, net of income tax of $1,851 5,351 Total other comprehensive income 5,351 Balance at September 30, 2018 $ 4,567 Amounts reclassified from accumulated other comprehensive income (loss) are included within interest expense on the consolidated statements of income.

Segments

Segments	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segments	13. Segments The Company has one reportable and one operating segment, healthy grocery stores. In accordance with ASC 606, the following table represents a disaggregation of revenue for the thirteen and thirty-nine weeks ended September 30, 2018 and October 1, 2017. Thirteen Weeks Ended September 30, 2018 October 1, 2017 Perishables $ 777,413 58.5 % $ 710,250 58.9 % Non-Perishables 551,696 41.5 % 495,809 41.1 % Net Sales $ 1,329,109 100.0 % $ 1,206,059 100.0 % Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 Perishables $ 2,283,348 58.0 % $ 2,060,367 58.5 % Non-Perishables 1,654,650 42.0 % 1,460,312 41.5 % Net Sales $ 3,937,998 100.0 % $ 3,520,679 100.0 % The Company categorizes the varieties of products it sells as perishable and non-perishable. Perishable product categories include produce, meat, seafood, deli, bakery, floral and dairy and dairy alternatives. Non-perishable product categories include grocery, vitamins and supplements, bulk items, frozen foods, beer and wine, and natural health and body care.

Equity-Based Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity-Based Compensation	14. Equity-Based Compensation 2013 Incentive Plan The Company’s board of directors adopted, and its equity holders approved, the Sprouts Farmers Market, Inc. 2013 Incentive Plan (the “2013 Incentive Plan”). The 2013 Incentive Plan became effective July 31, 2013 in connection with the Company’s initial public offering and replaced the 2011 Option Plan (as defined below) (except with respect to outstanding options under the 2011 Option Plan). The 2013 Incentive Plan serves as the umbrella plan for the Company’s stock-based and cash-based incentive compensation programs for its directors, officers and other team members, including RSUs, PSAs, and RSAs. On May 1, 2015, the Company’s stockholders approved the material terms of the performance goals under the 2013 Incentive Plan for purposes of Section 162(m) of the Internal Revenue Code. The aggregate number of shares of common stock that may be issued to team members and directors under the 2013 Incentive Plan may not exceed 10,089,072. Shares subject to awards granted under the 2013 Incentive Plan which are subsequently forfeited, expire unexercised or are otherwise not issued will not be treated as having been issued for purposes of the share limitation. As of September 30, 2018, there were 3,025,033 2011 Option Plan In May 2011, the Company adopted the Sprouts Farmers Markets, LLC Option Plan (the “2011 Option Plan”) to provide team members or directors of the Company with options to acquire shares of the Company. The Company had authorized 12,100,000 shares for issuance under the 2011 Option Plan. Options may no longer be issued under the 2011 Option Plan. As of September 30, 2018, there were 130,643 options outstanding under the 2011 Option Plan. Awards Granted During the thirty-nine weeks ended September 30, 2018, the Company granted the following stock-based compensation awards: Grant Date RSUs PSAs March 2018 451,951 126,098 May 2018 54,913 2,756 August 2018 8,732 — Total: 515,596 128,854 Weighted-average grant date fair value $ 24.80 $ 25.10 Weighted-average exercise price — — Stock Options The Company uses the Black-Scholes option pricing model to estimate the fair value of options at grant date. Options vest in accordance with the terms set forth in the grant letter and vary depending on if they are time-based or performance-based. Time-based options granted prior to fiscal year 2016 generally vest ratably over a period of 12 quarters (three years), and time-based options granted in fiscal year 2016 vest annually over a period of three years. No options have been granted subsequent to 2016. RSUs The fair value of RSUs is based on the closing price of the Company’s common stock on the grant date. RSUs generally vest annually over a period of two or three years from the grant date. PSAs PSAs granted in fiscal year 2015 are restricted shares that were subject to the Company achieving certain earnings per share performance targets, as well as additional time-vesting conditions. The fair value of PSAs is based on the closing price of the Company’s common stock on the grant date. The performance conditions with respect to 2015 earnings per share targets were deemed to have been met, and all PSAs have vested. During the thirty-nine weeks ended September 30, 2018, 20,595 of the 2015 PSAs were vested, and during the thirty-nine weeks ended October 1, 2017, 21,050 of the 2015 PSAs were vested. PSAs granted in fiscal year 2016 are restricted shares that are subject to the Company achieving certain earnings before interest and taxes (“EBIT”) performance targets on an annual and cumulative basis over a three-year performance period, as well as additional time-vesting conditions. The EBIT target for each of the three years during the performance period is based on a percentage increase over the previous year’s actual EBIT, with each annual performance tranche measured independently of the previous and next tranche and is measured against a cumulative performance The performance conditions with respect to 2016 and 2017 EBIT were not met. PSAs granted in March 2017 were subject to the Company achieving certain earnings per share performance targets during 2017. The criteria is based on a range of performance targets in which grantees may earn between 10% and 150% of the base number of awards granted. The performance conditions with respect to 2017 earnings per share were deemed to have been met, and the PSAs will vest 50% on the second anniversary of the grant date (2019) and 50% on the third anniversary of the grant date (2020). PSAs granted in March 2018 are subject to the Company achieving certain EBIT performance targets for the 2020 fiscal year. The criteria is based on a range of performance targets in which grantees may earn 0% to 200% of the base number of awards granted. If performance conditions are met, the applicable number of performance shares will vest on the third anniversary of the grant date (2021). RSAs The fair value of RSAs is based on the closing price of the Company’s common stock on the grant date. Outstanding RSA grants vest annually over three years. Equity-based Compensation Expense Equity-based compensation expense was reflected in the consolidated statements of income as follows: Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Cost of sales, buying and occupancy $ 251 $ 265 $ 827 $ 777 Direct store expenses 339 349 1,063 1,098 Selling, general and administrative expenses 2,453 3,471 9,783 8,450 Equity-based compensation expense before income taxes 3,043 4,085 11,673 10,325 Income tax benefit (782 ) (1,528 ) (3,000 ) (3,863 ) Net equity-based compensation expense $ 2,261 $ 2,557 $ 8,673 $ 6,462 The following equity-based awards were outstanding as of September 30, 2018 and December 31, 2017: As of September 30, 2018 December 31, 2017 (in thousands) Options Vested 1,816 4,226 Unvested 98 464 RSUs 694 449 PSAs 366 231 RSAs 182 353 As of September 30, 2018, total unrecognized compensation expense and remaining weighted average recognition period related to outstanding equity-based awards was as follows: Unrecognized compensation expense Remaining weighted average recognition period Options $ 360 0.4 RSUs 11,895 1.8 PSAs 3,834 1.4 RSAs 2,343 1.4 Total unrecognized compensation expense at September 30, 2018 $ 18,432 During the thirty-nine weeks ended September 30, 2018 and October 1, 2017, the Company received $21.1 million and $6.6 million, respectively, in cash proceeds from the exercise of options.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Fiscal Years	The Company reports its results of operations on a 52- or 53-week fiscal calendar ending on the Sunday closest to December 31. The fiscal year ending December 30, 2018 (“fiscal year 2018”) and fiscal year 2017 are 52-week years. The Company reports its results of operations on a 13-week quarter, except for 53-week fiscal years.
Revenue Recognition	Revenue Recognition The Company has adopted Accounting Standards Codification (“ASC”) 606, “Revenue from Contracts with Customers” in the first quarter of fiscal year 2018, with a date of initial application of January 1, 2018, using the modified retrospective approach. Comparative information presented has not been adjusted and continues to be reported under ASC 605. The Company applied ASC 606 to all of its contracts with customers. As a result of the adoption, there is no impact to any financial statement line item, and the Company has recorded no impact to opening retained earnings as of January 1, 2018. The Company does not have any material contract assets or receivables from contracts with customers, any revenue recognized in the current period from performance obligations satisfied in previous periods, any contract performance obligations, or any material costs to obtain or fulfill a contract as of September 30, 2018. The Company had a net gift card liability balance of $6.8 million as of September 30, 2018 and $13.1 million as of December 31, 2017. During the thirty-nine weeks ended September 30, 2018, the Company recognized $16.1 million in sales related to gift cards redeemed by customers. Revenue is recognized at the point of sale. The Company’s performance obligations are satisfied upon the transfer of goods to the customer, at the point of sale, and payment from customers is also due at the time of sale. Proceeds from the sale of gift cards are recorded as a liability at the time of sale, and recognized as sales when they are redeemed by the customer and the performance obligation is satisfied by the Company. The nature of goods the Company transfers to customers at the point of sale are inventories, consisting of merchandise purchased for resale.
Restricted Cash	Restricted Cash Restricted cash relates to defined benefit plan forfeitures of approximately $0.7 million and is included in prepaid expenses and other current assets in the consolidated balance sheets.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers.” ASU No. 2014-09 provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, and estimating the amount of variable consideration to include in the transaction price attributable to each separate performance obligation. Subsequent to the initial standards, the FASB has also issued several ASUs to clarify specific revenue recognition topics. The Company adopted ASC 606 effective January 1, 2018 using the modified retrospective approach. As noted above, there is no impact to any financial statement line item as a result of the adoption, and the Company has recorded no impact to opening retained earnings as of January 1, 2018. The Company has added additional disclosures of disaggregated revenue by type in Note 13, “Segments.” In March 2016, the FASB issued ASU No. 2016-04, “Liabilities-Extinguishments of Liabilities (Subtopic 405-20): Recognition of breakage for certain prepaid stored-value products.” ASU No. 2016-04 provides a narrow scope exception to the guidance in Subtopic 405-20 to require that stored-value breakage be accounted for consistently with the breakage guidance in Topic 606. The amendments in this update contain specific guidance for derecognition of prepaid stored-value product liabilities, thereby eliminating the current and potential future diversity. The guidance was effective for the Company for its fiscal year 2018. The Company adopted this guidance using the modified retrospective approach. As noted above, there is no impact to any financial statement line item as a result of the adoption, and the Company recorded no impact to opening retained earnings as of January 1, 2018. In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” This update provides clarifications on the cash flow classification for eight specific cash flow issues: debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (COLIs) (including bank-owned life insurance policies (BOLIs)); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. Adoption of this guidance took place during the first quarter of fiscal year 2018, using the retrospective transition method, and the adoption had no impact on the Company’s consolidated financial statements or disclosures. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” The amendments in this update require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Adoption of this guidance took place prospectively during the first quarter of 2018, and the adoption did not have a material impact on the Company’s consolidated financial statements or disclosures. In May 2017, the FASB issued ASU No. 2017-09, “Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting.” The amendments in this update provide guidance about which changes to the terms or conditions of a share-based award require an entity to apply modification accounting in Topic 718. Adoption of this guidance took place prospectively during the first quarter 2018, and the adoption did not have an impact on the Company’s consolidated financial statements or disclosures. In August 2018, the FASB issued ASU No. 2018-15, “Intangibles —Goodwill and Other —Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include internal-use software license). The amendments require an entity in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which service contract implementation costs to capitalize as an asset and which costs to expense. The amendments also require the entity to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangements, which includes reasonably certain renewals. The Company adopted this guidance during the third quarter 2018 using the prospective transition approach. Adoption of the guidance did not have a material impact to the Company's financial statements and resulted in capitalization of implementation costs associated with various technology initiatives which are included in other assets in the consolidated balance sheet as of September 30, 2018.
Recently Issued Accounting Pronouncements Not Yet Adopted	Recently Issued Accounting Pronouncements Not Yet Adopted In February 2016, the FASB issued ASU No. 2016-02, “Leases (ASC 842).” ASU No. 2016-02 requires lessees to recognize a right-of-use asset and corresponding lease liability for all leases with terms greater than twelve months. Recognition, measurement and presentation of expenses will depend on classification as a financing or operating lease. Certain additional quantitative and qualitative disclosures will also be required. This ASU will be effective for the Company beginning with its 2019 fiscal year. While the Company is still evaluating the impact of this ASU, the Company expects it will result in material increases in assets and liabilities in its consolidated balance sheet and enhanced disclosures. In addition, the Company anticipates that the transition of its financing leases to operating leases under the new standard will result in an increase in rent expense, partially offset by reductions to depreciation and interest expense. The Company does not expect that the adoption of the ASU will have an impact on the Company’s cash flows. In January 2017, the FASB issued ASU No. 2017-04, “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” The amendments in this update eliminate the second step of the goodwill impairment test and provide that a n entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. The guidance will be effective for the Company for its fiscal year 2020, with early adoption permitted. The Company does not expect this ASU to materially impact the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-14, “Compensation —Retirement Benefits —Defined Benefit Plans —General (Subtopic 715-20) —Disclosure Framework —Changes to the Disclosure Requirements for Defined Benefit Plans.” The amendments in this update remove disclosures that no longer are considered cost-beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. The guidance will be effective for the Company for its fiscal year 2020, with early adoption permitted. The Company does not expect this ASU to materially impact the Company’s disclosures. No other new accounting pronouncements issued or effective during the thirty-nine weeks ended September 30, 2018 had, or are expected to have, a material impact on the Company’s consolidated financial statements.
Fair Value Measurements	3. Fair Value Measurements The Company records its financial assets and liabilities in accordance with the framework for measuring fair value in accordance with GAAP. This framework establishes a fair value hierarchy that prioritizes the inputs used to measure fair value: Level 1: Quoted prices for identical instruments in active markets. Level 2: Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 3: Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Fair value measurements of nonfinancial assets and nonfinancial liabilities are primarily used in the impairment analysis of goodwill, indefinite-lived intangible assets and long-lived assets. The following tables present the fair value hierarchy for the Company’s financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017: September 30, 2018 Level 1 Level 2 Level 3 Total Long-term debt $ — $ 435,000 $ — $ 435,000 Total liabilities $ — $ 435,000 $ — $ 435,000 Interest rate swap asset $ — $ 6,159 $ — $ 6,159 Total assets $ — $ 6,159 $ — $ 6,159 December 31, 2017 Level 1 Level 2 Level 3 Total Long-term debt $ — $ 348,000 $ — $ 348,000 Interest rate swap liability — 1,064 — 1,064 Total liabilities $ — $ 349,064 $ — $ 349,064 The Company’s interest rate swaps are considered Level 2 in the hierarchy and are valued using an income approach. Expected future cash flows are converted to a present value amount based on market expectations of the yield curve on floating interest rates, which is readily available on public markets. Cash, cash equivalents, and restricted cash, accounts receivable, prepaid expenses and other current assets, accounts payable and other accrued liabilities and, accrued salaries and benefits approximate fair value because of the short maturity of those instruments. Based on comparable open market transactions, the fair value of the long-term debt approximated carrying value as of September 30, 2018 and December 31, 2017.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present the fair value hierarchy for the Company’s financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017: September 30, 2018 Level 1 Level 2 Level 3 Total Long-term debt $ — $ 435,000 $ — $ 435,000 Total liabilities $ — $ 435,000 $ — $ 435,000 Interest rate swap asset $ — $ 6,159 $ — $ 6,159 Total assets $ — $ 6,159 $ — $ 6,159 December 31, 2017 Level 1 Level 2 Level 3 Total Long-term debt $ — $ 348,000 $ — $ 348,000 Interest rate swap liability — 1,064 — 1,064 Total liabilities $ — $ 349,064 $ — $ 349,064

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Summary of Long-Term Debt	A summary of long-term debt is as follows: As of Facility Maturity Interest Rate September 30, 2018 December 31, 2017 Senior secured debt $700.0 million Credit Agreement March 27, 2023 Variable $ 435,000 $ — Former Credit Facility April 17, 2020 Variable — 348,000 Total debt 435,000 348,000 Long-term debt $ 435,000 $ 348,000

Closed Store Reserves (Tables)

Closed Store Reserves (Tables)	9 Months Ended
	Sep. 30, 2018
Restructuring And Related Activities [Abstract]
Summary of Closed Store Reserve Activity	The following is a summary of closed store reserve activity during the thirty-nine weeks ended September 30, 2018 and fiscal year 2017: Thirty-nine Weeks Ended Fiscal Year Ended September 30, 2018 December 31, 2017 Beginning balance $ 811 $ 1,083 Additions — — Usage (320 ) (492 ) Adjustments 85 220 Ending balance $ 576 $ 811

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Schedule of Common Stock Share Repurchase Programs Authorized by Board of Directors from Time to Time and Related Repurchase Activity and Available Authorized	The following table outlines the common stock share repurchase programs authorized by the Company’s board of directors from time to time, and the related repurchase activity and available authorization as of September 30, 2018. Effective date Expiration date Amount authorized Cost of repurchases Authorization available November 4, 2015 November 4, 2017 $ 150,000 $ 150,000 $ — September 6, 2016 December 31, 2017 $ 250,000 $ 250,000 $ — February 20, 2017 December 31, 2018 $ 250,000 $ 250,000 $ — February 20, 2018 December 31, 2019 $ 350,000 $ 66,707 $ 283,293
Schedule of Share Repurchase Activity under Share Repurchase Programs	Share repurchase activity under the Company’s repurchase programs for the periods indicated was as follows (total cost in thousands): Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Number of common shares acquired 719,004 3,249,204 8,411,575 9,136,468 Average price per common share acquired $ 21.29 $ 22.16 $ 22.98 $ 21.01 Total cost of common shares acquired $ 15,307 $ 72,000 $ 193,307 $ 192,000

Net Income Per Share (Tables)

Net Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Summary of Reconciliation of Numerators and Denominators of Basic and Diluted Net Income Per Share	A reconciliation of the numerators and denominators of the basic and diluted net income per share calculations is as follows (in thousands, except per share amounts): Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Basic net income per share: Net income $ 37,500 $ 31,486 $ 145,833 $ 118,741 Weighted average shares outstanding 126,855 134,320 129,572 136,063 Basic net income per share $ 0.30 $ 0.23 $ 1.13 $ 0.87 Diluted net income per share: Net income $ 37,500 $ 31,486 $ 145,833 $ 118,741 Weighted average shares outstanding - basic 126,855 134,320 129,572 136,063 Dilutive effect of equity-based awards: Assumed exercise of options to purchase shares 341 2,128 484 2,506 RSUs 175 122 193 124 RSAs 82 114 137 102 PSAs 174 86 151 65 Weighted average shares and equivalent shares outstanding 127,627 136,770 130,537 138,860 Diluted net income per share $ 0.29 $ 0.23 $ 1.12 $ 0.86

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Derivative Instruments	As of September 30, 2018 As of December 31, 2017 Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as hedging instruments Interest rate swaps Other Current Assets and Other Assets $ 6,159 Other Accrued Liabilities and Long-term Liabilities $ 1,064
Summary of Gains and Losses of Derivative Instruments	Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Consolidated Statements of Income Classification Interest income (expense), net $ 176 $ — $ 115 $ —

Comprehensive Income (Tables)

Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income	The following table presents the changes in accumulated other comprehensive income for the thirty-nine weeks ended September 30, 2018 Cash Flow Hedges Balance at December 31, 2017 $ (784 ) Other comprehensive income, net of tax Unrealized gain on cash flow hedging activities, net of income tax of $1,851 5,351 Total other comprehensive income 5,351 Balance at September 30, 2018 $ 4,567

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Summary of Disaggregation of Revenue	In accordance with ASC 606, the following table represents a disaggregation of revenue for the thirteen and thirty-nine weeks ended September 30, 2018 and October 1, 2017. Thirteen Weeks Ended September 30, 2018 October 1, 2017 Perishables $ 777,413 58.5 % $ 710,250 58.9 % Non-Perishables 551,696 41.5 % 495,809 41.1 % Net Sales $ 1,329,109 100.0 % $ 1,206,059 100.0 % Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 Perishables $ 2,283,348 58.0 % $ 2,060,367 58.5 % Non-Perishables 1,654,650 42.0 % 1,460,312 41.5 % Net Sales $ 3,937,998 100.0 % $ 3,520,679 100.0 %

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Stock-Based Compensation Awards Granted	During the thirty-nine weeks ended September 30, 2018, the Company granted the following stock-based compensation awards: Grant Date RSUs PSAs March 2018 451,951 126,098 May 2018 54,913 2,756 August 2018 8,732 — Total: 515,596 128,854 Weighted-average grant date fair value $ 24.80 $ 25.10 Weighted-average exercise price — —
Summary of Equity-Based Compensation Expense	Equity-based Compensation Expense Equity-based compensation expense was reflected in the consolidated statements of income as follows: Thirteen Weeks Ended Thirty-nine Weeks Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Cost of sales, buying and occupancy $ 251 $ 265 $ 827 $ 777 Direct store expenses 339 349 1,063 1,098 Selling, general and administrative expenses 2,453 3,471 9,783 8,450 Equity-based compensation expense before income taxes 3,043 4,085 11,673 10,325 Income tax benefit (782 ) (1,528 ) (3,000 ) (3,863 ) Net equity-based compensation expense $ 2,261 $ 2,557 $ 8,673 $ 6,462
Summary of Outstanding Equity-Based Awards	The following equity-based awards were outstanding as of September 30, 2018 and December 31, 2017: As of September 30, 2018 December 31, 2017 (in thousands) Options Vested 1,816 4,226 Unvested 98 464 RSUs 694 449 PSAs 366 231 RSAs 182 353
Summary of Total Unrecognized Compensation Expense and Remaining Weighted Average Recognition Period Related to Outstanding Equity-Based Awards	As of September 30, 2018, total unrecognized compensation expense and remaining weighted average recognition period related to outstanding equity-based awards was as follows: Unrecognized compensation expense Remaining weighted average recognition period Options $ 360 0.4 RSUs 11,895 1.8 PSAs 3,834 1.4 RSAs 2,343 1.4 Total unrecognized compensation expense at September 30, 2018 $ 18,432

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	Jan. 01, 2018	Sep. 30, 2018	Dec. 31, 2017
Prepaid Expenses and Other Current Assets [Member]
Summary Of Significant Accounting Policy [Line Items]
Restricted cash related to defined benefit plan forfeitures		$ 700,000
Accounting Standards Update 2014-09 [Member]
Summary Of Significant Accounting Policy [Line Items]
Net gift card liability balance		6,800,000	$ 13,100,000
Accounting Standards Update 2014-09 [Member] | Effect of Change [Member]
Summary Of Significant Accounting Policy [Line Items]
Impact to opening retained earnings	$ 0
Accounting Standards Update 2014-09 [Member] | Gift Card Revenue [Member]
Summary Of Significant Accounting Policy [Line Items]
Recognized sales related to gift cards redeemed by customers		$ 16,100,000
Accounting Standards Update 2016-04 [Member]
Summary Of Significant Accounting Policy [Line Items]
Impact to opening retained earnings	$ 0

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Long-term debt	$ 435,000	$ 348,000
Interest rate swap liability		1,064
Total liabilities	435,000	349,064
Interest rate swap asset	6,159
Total assets	6,159
Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Long-term debt	435,000	348,000
Interest rate swap liability		1,064
Total liabilities	435,000	$ 349,064
Interest rate swap asset	6,159
Total assets	$ 6,159

Long-Term Debt - Summary of Lon

Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 435,000	$ 348,000
Long-term debt	435,000	348,000
Senior Lien [Member] | Secured Debt [Member] | $700.0 million Credit Agreement [Member]
Debt Instrument [Line Items]
Total debt	$ 435,000
Debt instrument maturity	Mar. 27, 2023
Debt instrument, Interest Rate	Variable
Senior Lien [Member] | Secured Debt [Member] | Former Credit Facility [Member]
Debt Instrument [Line Items]
Total debt		$ 348,000
Debt instrument maturity		Apr. 17, 2020
Debt instrument, Interest Rate		Variable

Long-Term Debt - Summary of L_2

Long-Term Debt - Summary of Long-Term Debt (Parenthetical) (Detail)	Sep. 30, 2018USD ($)
Senior Lien [Member] | Secured Debt [Member] | $700.0 million Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 700,000,000

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Apr. 01, 2018	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017	Mar. 27, 2018	Apr. 17, 2015
Debt Instrument [Line Items]
Borrowings during the period		$ 180,000,000	$ 134,000,000
September 6, 2016 Share Repurchase Program [Member]
Debt Instrument [Line Items]
Shares authorized to be repurchased		250,000,000
Principal payments on the Credit Facility		93,000,000
Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Borrowings under credit facilities		$ 435,000,000
Fixed portion of outstanding debt percentage		57.00%
Participation fee		1.50%
Issuance fee		0.125%
Credit facility termination date		Mar. 27, 2023
Net leverage ratio		325.00%
Interest coverage ratio		175.00%
Former Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity						$ 450,000,000
Borrowings under credit facilities				$ 348,000,000
Credit facility termination date		Apr. 17, 2020
Borrowings during the period				153,000,000
Former Credit Facility [Member] | September 6, 2016 Share Repurchase Program [Member]
Debt Instrument [Line Items]
Shares authorized to be repurchased				250,000,000
Principal payments on the Credit Facility				$ 60,000,000
Former Credit Facility [Member] | Swingline Loan Subfacility [Member]
Debt Instrument [Line Items]
Debt instrument face amount						15,000,000
Senior Lien [Member] | Secured Debt [Member] | Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Loss on early extinguishment of debt	$ (300,000)
Letters of credit issued		$ 27,000,000
Line of credit interest rate terms		LIBOR plus 1.50% per annum. The interest rate margins are subject to adjustment pursuant to a pricing grid based on the Company’s total net leverage ratio, as set forth in the Amended and Restated Credit Agreement.
Senior Lien [Member] | Secured Debt [Member] | Amended and Restated Credit Agreement [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate spread on base rate		1.50%
Senior Lien [Member] | Secured Debt [Member] | Amended and Restated Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit facility unused commitment fee percentage		0.15%
Senior Lien [Member] | Secured Debt [Member] | Amended and Restated Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility unused commitment fee percentage		0.30%
Senior Lien [Member] | Secured Debt [Member] | Amended and Restated Credit Agreement [Member] | Swingline Loan Subfacility [Member]
Debt Instrument [Line Items]
Debt instrument face amount		$ 15,000,000
Senior Lien [Member] | Secured Debt [Member] | Former Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity						$ 450,000,000
Borrowings under credit facilities		$ 0
Line of credit interest rate terms		LIBOR plus 1.50% per annum, or a base rate plus 0.50% per annum. The interest rate margins were subject to adjustment pursuant to a pricing grid based on the Company’s total gross leverage ratio, as defined in the Former Credit Facility.
Credit facility unused commitment fee percentage		0.20%
Senior Lien [Member] | Secured Debt [Member] | Former Credit Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate spread on base rate		1.50%
Senior Lien [Member] | Secured Debt [Member] | Former Credit Facility [Member] | Alternate Base Rate [Member]
Debt Instrument [Line Items]
Interest rate spread on base rate		0.50%
Senior Lien [Member] | Secured Debt [Member] | Former Credit Facility [Member] | Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Capitalized debt issuance costs		$ 700,000
Senior Lien [Member] | Secured Debt [Member] | $700.0 million Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument face amount		700,000,000
Senior Lien [Member] | Secured Debt [Member] | $700.0 million Credit Facility [Member] | Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity					$ 700,000,000
Capitalized debt issuance costs		$ 2,100,000
Interest expense term		5 years

Closed Store Reserves - Summary

Closed Store Reserves - Summary of Closed Store Reserve Activity (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Restructuring And Related Activities [Abstract]
Beginning balance	$ 811	$ 1,083
Usage	(320)	(492)
Adjustments	85	220
Ending balance	$ 576	$ 811

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	Dec. 22, 2017	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Corporate federal income tax rate				21.00%		35.00%
Percentage of bonus depreciation for qualified property acquired and placed in service	100.00%
Effective tax rate		17.30%	33.80%	16.40%	31.70%
Tax cuts and jobs act of 2017 accounting complete percentage of discrete rate benefit		5.70%		1.50%
Discrete tax benefit		$ 2.6
Excess tax benefits resulting from share-based payment awards		$ 1	$ 0.2	$ 12.4	$ 8.4

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Coffee Supplier [Member]
Related Party Transaction [Line Items]
Purchases from board member	$ 0	$ 2,700,000	$ 2,600,000	$ 8,100,000
Accounts payable to supplier	0		0		$ 700,000
Technology Supplier [Member]
Related Party Transaction [Line Items]
Purchases from board member	1,800,000	$ 1,600,000	4,400,000	$ 5,200,000
Accounts payable to supplier	$ 200,000		$ 200,000		$ 100,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Common Stock Share Repurchase Programs Authorized by Board of Directors from Time to Time and Related Repurchase Activity and Available Authorized (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017
Equity Class Of Treasury Stock [Line Items]
Cost of repurchases	$ 193,307,000	$ 192,000,000
November 4, 2015 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Nov. 4, 2015
Expiration date	Nov. 4, 2017
Amount authorized	$ 150,000,000
Cost of repurchases	$ 150,000,000
September 6, 2016 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Sep. 6, 2016
Expiration date	Dec. 31, 2017
Amount authorized	$ 250,000,000
Cost of repurchases	$ 250,000,000
February 20, 2017 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Feb. 20, 2017
Expiration date	Dec. 31, 2018
Amount authorized	$ 250,000,000
Cost of repurchases	$ 250,000,000
February 20, 2018 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Feb. 20, 2018
Expiration date	Dec. 31, 2019
Amount authorized	$ 350,000,000
Cost of repurchases	66,707,000
Authorization available	$ 283,293,000

Stockholders' Equity - Schedu_2

Stockholders' Equity - Schedule of Share Repurchase Activity under Share Repurchase Programs (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Equity [Abstract]
Number of common shares acquired	719,004	3,249,204	8,411,575	9,136,468
Average price per common share acquired	$ 21.29	$ 22.16	$ 22.98	$ 21.01
Total cost of common shares acquired	$ 15,307	$ 72,000	$ 193,307	$ 192,000	$ 203,392

Net Income Per Share - Summary

Net Income Per Share - Summary of Reconciliation of Numerators and Denominators of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Basic net income per share:
Net income	$ 37,500	$ 31,486	$ 145,833	$ 118,741	$ 158,440
Weighted average shares outstanding	126,855	134,320	129,572	136,063
Basic net income per share	$ 0.30	$ 0.23	$ 1.13	$ 0.87
Diluted net income per share:
Net income	$ 37,500	$ 31,486	$ 145,833	$ 118,741	$ 158,440
Weighted average shares outstanding - basic	126,855	134,320	129,572	136,063
Dilutive effect of equity-based awards:
Assumed exercise of options to purchase shares	341	2,128	484	2,506
Weighted average shares and equivalent shares outstanding	127,627	136,770	130,537	138,860
Diluted net income per share	$ 0.29	$ 0.23	$ 1.12	$ 0.86
RSUs [Member]
Dilutive effect of equity-based awards:
Dilutive effect	175	122	193	124
RSAs [Member]
Dilutive effect of equity-based awards:
Dilutive effect	82	114	137	102
PSAs [Member]
Dilutive effect of equity-based awards:
Dilutive effect	174	86	151	65

Net Income Per Share - Addition

Net Income Per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Stock option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	0.7	1.9	1.1	1.9
PSAs [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	0.1	0.1	0.1	0.1

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018USD ($)Swap	Dec. 31, 2017USD ($)HedgeSwap
Derivative [Line Items]
Number of outstanding swaps | Swap	5	5
Derivative, cash flow swaps length period	1 year
Cash flow swaps mature annually, starting year	2,018
Cash flow swaps mature annually, ending year	2,022
Hedging instruments effectiveness review measurement basis	The Company reviews the effectiveness of its hedging instruments on a quarterly basis
Cash Flow Hedges [Member]
Derivative [Line Items]
Interest rate swaps hedge ineffectiveness	0.00%
Swaps [Member]
Derivative [Line Items]
Derivative, notional amount of outstanding swaps | $	$ 250,000,000	$ 250,000,000
Forward Contract [Member]
Derivative [Line Items]
Derivative, number of cash flow hedges | Hedge		5

Derivative Financial Instrume_4

Derivative Financial Instruments - Summary of Fair Value of Derivative Instruments (Detail) - Derivatives Designated as Hedging Instruments [Member] - Interest Rate Swaps [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Current Assets and Other Assets [Member]
Derivatives Fair Value [Line Items]
Assets Derivatives, Fair Value	$ 6,159
Other Accrued Liabilities and Long-term Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives, Fair Value		$ 1,064

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Gains and Losses of Derivative Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Interest Income (Expense), Net [Member]
Derivative Instruments Gain Loss [Line Items]
Gain / (Loss) on Derivative Instruments,net of tax	$ 176	$ 115

Comprehensive Income - Addition

Comprehensive Income - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Oct. 01, 2017
Equity [Abstract]
Accumulated other comprehensive income	$ 4,567	$ (784)	$ 0

Comprehensive Income - Changes

Comprehensive Income - Changes In Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ 650,694	$ 672,909
Other comprehensive income, net of tax
Unrealized gain on cash flow hedging activities, net of income tax of $1,851	$ 865	5,351
Total other comprehensive income	865	5,351	(784)
Ending Balance	641,295	641,295	650,694
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(784)
Other comprehensive income, net of tax
Unrealized gain on cash flow hedging activities, net of income tax of $1,851		5,351
Total other comprehensive income		5,351
Ending Balance	$ 4,567	$ 4,567	$ (784)

Comprehensive Income - Change_2

Comprehensive Income - Changes In Accumulated Other Comprehensive Income (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gain on cash flow hedging activities, net of income tax	$ 299	$ 0	$ 1,851	$ 0
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gain on cash flow hedging activities, net of income tax			$ 1,851

Segments - Additional Informati

Segments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018Segment
Segment Reporting [Abstract]
Number of reportable segment	1
Number of operating segment	1

Segments - Summary of Disaggreg

Segments - Summary of Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Disaggregation Of Revenue [Line Items]
Net Sales, amount	$ 1,329,109	$ 1,206,059	$ 3,937,998	$ 3,520,679
Sales Revenue, Goods, Net [Member] | Product Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Net Sales, percentage	100.00%	100.00%	100.00%	100.00%
Perishables [Member]
Disaggregation Of Revenue [Line Items]
Net Sales, amount	$ 777,413	$ 710,250	$ 2,283,348	$ 2,060,367
Perishables [Member] | Sales Revenue, Goods, Net [Member] | Product Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Net Sales, percentage	58.50%	58.90%	58.00%	58.50%
Non-Perishables [Member]
Disaggregation Of Revenue [Line Items]
Net Sales, amount	$ 551,696	$ 495,809	$ 1,654,650	$ 1,460,312
Non-Perishables [Member] | Sales Revenue, Goods, Net [Member] | Product Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Net Sales, percentage	41.50%	41.10%	42.00%	41.50%

Equity-Based Compensation - Add

Equity-Based Compensation - Additional Information (Detail) - USD ($)	1 Months Ended		9 Months Ended		12 Months Ended		21 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2018	Oct. 01, 2017	Jan. 01, 2017	Jan. 03, 2016	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from exercise of stock options			$ 21,051,000	$ 6,640,000
Stock option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted							0
RSUs [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			2 years
RSUs [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards vesting description			The performance conditions with respect to 2015 earnings per share targets were deemed to have been met, and all PSAs have vested. During the thirty-nine weeks ended September 30, 2018, 20,595 of the 2015 PSAs were vested, and during the thirty-nine weeks ended October 1, 2017, 21,050 of the 2015 PSAs were vested.
Total grant date fair value vested			$ 20,595	$ 21,050
Performance stock awards description	The criteria is based on a range of performance targets in which grantees may earn 0% to 200% of the base number of awards granted.	The criteria is based on a range of performance targets in which grantees may earn between 10% and 150% of the base number of awards granted.	Payout of the performance shares will either be 0% or range from 50% to 150% of the target number of shares granted, depending upon goal achievement.
PSAs [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards payout percentage of shares granted	0.00%
PSAs [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards payout percentage of shares granted	200.00%
RSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Second Anniversary [Member] | Stock option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						3 years
Second Anniversary [Member] | PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards vesting percentage		50.00%
Third Anniversary [Member] | Stock option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Third Anniversary [Member] | PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards vesting percentage		50.00%
Option One [Member] | PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards payout percentage of shares granted					0.00%
Option Two [Member] | PSAs [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards payout percentage of shares granted		10.00%			50.00%
Option Two [Member] | PSAs [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards payout percentage of shares granted		150.00%			150.00%
2013 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under plan			10,089,072				10,089,072
Options outstanding			3,025,033				3,025,033
Remaining shares available for issuance			5,205,689				5,205,689
2011 Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under plan			12,100,000				12,100,000
Options outstanding			130,643				130,643

Equity-Based Compensation - Sum

Equity-Based Compensation - Summary of Stock-Based Compensation Awards Granted (Detail)	9 Months Ended
	Sep. 30, 2018$ / sharesshares
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	515,596
Weighted-average grant date fair value | $ / shares	$ 24.80
PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	128,854
Weighted-average grant date fair value | $ / shares	$ 25.10
March 2018 [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	451,951
March 2018 [Member] | PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	126,098
May 2018 [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	54,913
May 2018 [Member] | PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	2,756
August 2018 [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of other than options, Granted	8,732

Equity-Based Compensation - S_2

Equity-Based Compensation - Summary of Equity-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense before income taxes	$ 3,043	$ 4,085	$ 11,673	$ 10,325
Income tax benefit	(782)	(1,528)	(3,000)	(3,863)
Net equity-based compensation expense	2,261	2,557	8,673	6,462
Cost of Sales, Buying and Occupancy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense before income taxes	251	265	827	777
Direct Store Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense before income taxes	339	349	1,063	1,098
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense before income taxes	$ 2,453	$ 3,471	$ 9,783	$ 8,450

Equity-Based Compensation - S_3

Equity-Based Compensation - Summary of Outstanding Equity-Based Awards (Detail) - shares shares in Thousands	Sep. 30, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested options, outstanding	1,816	4,226
Unvested options, outstanding	98	464
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based awards other than options, outstanding	694	449
PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based awards other than options, outstanding	366	231
RSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based awards other than options, outstanding	182	353

Equity-Based Compensation - S_4

Equity-Based Compensation - Summary of Total Unrecognized Compensation Expense and Remaining Weighted Average Recognition Period Related to Outstanding Equity-Based Awards (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining weighted average recognition period	4 months 24 days
Unrecognized compensation expense related to outstanding options	$ 360
Total unrecognized compensation expense at September 30, 2018	$ 18,432
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining weighted average recognition period	1 year 9 months 18 days
Unrecognized compensation expense related to outstanding equity-based awards other than options	$ 11,895
PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining weighted average recognition period	1 year 4 months 24 days
Unrecognized compensation expense related to outstanding equity-based awards other than options	$ 3,834
RSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining weighted average recognition period	1 year 4 months 24 days
Unrecognized compensation expense related to outstanding equity-based awards other than options	$ 2,343