Chuy's (CHUY) 10-Q 9 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 26, 2019
Document Information [Line Items]
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Registrant Name	CHUY'S HOLDINGS, INC.
Entity Central Index Key	0001524931
Current Fiscal Year End Date	--12-29
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Common Stock, Shares Outstanding		16,606,408
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 30, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 11,752	$ 8,199
Accounts receivable	1,403	2,054
Lease incentives receivable	358	1,597
Income tax receivable	0	603
Inventories	1,723	1,541
Prepaid expenses and other current assets	7,104	3,736
Total current assets	22,340	17,730
Property and equipment, net	216,296	210,960
Operating lease assets	170,094	0
Other assets and intangible assets, net	494	2,425
Tradename	21,900	21,900
Goodwill	24,069	24,069
Total assets	455,193	277,084
CURRENT LIABILITIES
Accounts payable	5,671	6,463
Accrued liabilities	24,380	17,221
Operating lease liabilities	9,412	0
Deferred lease incentives	0	2,959
Total current liabilities	39,463	26,643
Deferred tax liability, net	1,539	2,601
Operating lease liabilities, less current portion	215,899	0
Accrued deferred rent	0	14,516
Deferred lease incentives, less current portion	0	39,473
Total liabilities	256,901	83,233
Commitments and contingencies
Stockholders’ equity
Common stock, $0.01 par value; 60,000,000 shares authorized; 16,698,652 shares issued and outstanding at June 30, 2019 and 16,856,373 shares issued and outstanding at December 30, 2018	167	169
Preferred stock, $0.01 par value; 15,000,000 shares authorized and no shares issued or outstanding at June 30, 2019 and December 30, 2018	0	0
Paid-in capital	94,820	99,490
Retained earnings	103,305	94,192
Total stockholders’ equity	198,292	193,851
Total liabilities and stockholders’ equity	$ 455,193	$ 277,084

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 30, 2018
Common stock - par value	$ 0.01	$ 0.01
Common stock - shares authorized	60,000,000	60,000,000
Common stock - shares issued	16,698,652	16,856,373
Common stock - shares outstanding	16,698,652	16,856,373
Preferred stock - par value	$ 0.01	$ 0.01
Preferred stock - authorized	15,000,000	15,000,000
Preferred stock - issued	0	0
Preferred stock - outstanding	0	0

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Income Statements - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Revenues	$ 113,132	$ 106,340	$ 215,243	$ 200,190
Costs and expenses:
Cost of sales	29,174	26,958	54,889	50,531
Labor	38,854	37,411	75,553	70,879
Operating	15,897	14,773	30,456	28,125
Occupancy	8,152	7,472	16,134	14,569
General and administrative	5,868	5,235	12,035	10,706
Marketing	1,544	1,089	2,995	2,169
Restaurant pre-opening	1,182	1,310	1,900	2,731
Legal settlement	775	0	775	0
Closure costs	216	0	588	0
Depreciation and amortization	5,124	4,902	10,201	9,615
Total costs and expenses	106,786	99,150	205,526	189,325
Income from operations	6,346	7,190	9,717	10,865
Interest expense	23	19	62	35
Income before income taxes	6,323	7,171	9,655	10,830
Income tax expense	78	715	193	1,191
Net income	$ 6,245	$ 6,456	$ 9,462	$ 9,639
Net income per common share:
Basic	$ 0.37	$ 0.38	$ 0.56	$ 0.57
Diluted	$ 0.37	$ 0.38	$ 0.56	$ 0.56
Weighted-average shares outstanding:
Basic	16,804,465	16,936,807	16,838,052	16,936,815
Diluted	16,859,657	17,072,179	16,902,656	17,067,715

Statement of Stockholders' Equi

Statement of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]
Beginning balance (in shares) at Dec. 31, 2017		16,923,741
Beginning balance at Dec. 31, 2017	$ 188,962	$ 169	$ 100,140	$ 88,653
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	788	$ 0	788	0
Proceeds from exercise of stock options		3,587
Proceeds from exercise of stock options	35	$ 0	35	0
Settlement of restricted stock units (in shares)		89,643
Settlement of restricted stock units	0	$ 1	(1)	0
Repurchase of shares of common stock (in shares)		(64,757)
Repurchase of shares of common stock	(1,619)	$ (1)	(1,618)	0
Indirect repurchase of shares for minimum tax withholdings (in shares)		(27,115)
Indirect repurchase of shares for minimum tax withholdings	(739)	$ 0	(739)	0
Net income	3,183	$ 0	0	3,183
End balance (in shares) at Apr. 01, 2018		16,925,099
End balance at Apr. 01, 2018	190,610	$ 169	98,605	91,836
Beginning balance (in shares) at Dec. 31, 2017		16,923,741
Beginning balance at Dec. 31, 2017	188,962	$ 169	100,140	88,653
Increase (Decrease) in Stockholders' Equity
Indirect repurchase of shares for minimum tax withholdings	(762)
Net income	9,639
End balance (in shares) at Jul. 01, 2018		16,946,362
End balance at Jul. 01, 2018	198,291	$ 169	99,830	98,292
Beginning balance (in shares) at Apr. 01, 2018		16,925,099
Beginning balance at Apr. 01, 2018	190,610	$ 169	98,605	91,836
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	871	$ 0	871	0
Proceeds from exercise of stock options		19,581
Proceeds from exercise of stock options	377	$ 0	377	0
Settlement of restricted stock units (in shares)		2,512
Settlement of restricted stock units	0	$ 0	0	0
Indirect repurchase of shares for minimum tax withholdings (in shares)		(830)
Indirect repurchase of shares for minimum tax withholdings	(23)	$ 0	(23)	0
Net income	6,456	$ 0	0	6,456
End balance (in shares) at Jul. 01, 2018		16,946,362
End balance at Jul. 01, 2018	198,291	$ 169	99,830	98,292
Beginning balance (in shares) at Dec. 30, 2018		16,856,373
Beginning balance at Dec. 30, 2018	193,851	$ 169	99,490	94,192
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	798	$ 0	798	0
Proceeds from exercise of stock options		4,687
Proceeds from exercise of stock options	34	$ 0	34	0
Settlement of restricted stock units (in shares)		115,688
Settlement of restricted stock units	1	$ 1	0	0
Repurchase of shares of common stock (in shares)		(80,309)
Repurchase of shares of common stock	(1,818)	$ (1)	(1,817)	0
Indirect repurchase of shares for minimum tax withholdings (in shares)		(35,800)
Indirect repurchase of shares for minimum tax withholdings	(811)	$ 0	(811)	0
Net income	3,217	$ 0	0	3,217
End balance (in shares) at Mar. 31, 2019		16,860,639
End balance at Mar. 31, 2019	194,923	$ 169	97,694	97,060
Beginning balance (in shares) at Dec. 30, 2018		16,856,373
Beginning balance at Dec. 30, 2018	$ 193,851	$ 169	99,490	94,192
Increase (Decrease) in Stockholders' Equity
Proceeds from exercise of stock options	16,643
Repurchase of shares of common stock (in shares)	(256,000)
Repurchase of shares of common stock	$ (5,700)
Indirect repurchase of shares for minimum tax withholdings	(838)
Net income	9,462
End balance (in shares) at Jun. 30, 2019		16,698,652
End balance at Jun. 30, 2019	198,292	$ 167	94,820	103,305
Increase (Decrease) in Stockholders' Equity
Adoption of ASU 2016-02 Leases (Topic 842)	(349)	$ 0	0	(349)
Beginning balance (in shares) at Mar. 31, 2019		16,860,639
Beginning balance at Mar. 31, 2019	194,923	$ 169	97,694	97,060
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	928	$ 0	928	0
Proceeds from exercise of stock options		11,956
Proceeds from exercise of stock options	99	$ 0	99	0
Settlement of restricted stock units (in shares)		3,493
Settlement of restricted stock units	$ (1)	$ 0	(1)	0
Repurchase of shares of common stock (in shares)	(176,000)	(176,171)
Repurchase of shares of common stock	$ (3,875)	$ (2)	(3,873)	0
Indirect repurchase of shares for minimum tax withholdings (in shares)		(1,265)
Indirect repurchase of shares for minimum tax withholdings	(27)	$ 0	(27)	0
Net income	6,245	$ 0	0	6,245
End balance (in shares) at Jun. 30, 2019		16,698,652
End balance at Jun. 30, 2019	$ 198,292	$ 167	$ 94,820	$ 103,305

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Cash flows from operating activities:
Net income	$ 9,462	$ 9,639
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,201	9,615
Amortization of operating lease assets	222	0
Amortization of loan origination costs	16	16
Stock-based compensation	1,622	1,557
Loss on disposal of property and equipment	121	0
Amortization of deferred lease incentives	0	(1,429)
Deferred income taxes	(956)	277
Changes in operating assets and liabilities:
Accounts receivable	651	1,669
Lease incentive receivable	1,239	4,193
Income tax receivable	603	470
Inventories	(182)	14
Prepaid expenses and other current assets	(3,368)	(494)
Accounts payable	(1,804)	(1,612)
Accrued liabilities	7,159	(349)
Operating lease liabilities	(315)	0
Accrued deferred rent	0	1,572
Deferred lease incentives	0	1,484
Net cash provided by operating activities	24,671	26,622
Cash flows from investing activities:
Purchase of property and equipment	(14,510)	(22,994)
Purchase of other assets	(213)	(155)
Net cash used in investing activities	(14,723)	(23,149)
Cash flows from financing activities:
Borrowings under revolving line of credit	5,000	0
Payments under revolving line of credit	(5,000)	0
Repurchase of shares of common stock	(5,690)	(1,618)
Proceeds from the exercise of stock options	133	412
Indirect repurchase of shares for minimum tax withholdings	(838)	(762)
Net cash used in financing activities	(6,395)	(1,968)
Net increase in cash and cash equivalents	3,553	1,505
Cash and cash equivalents, beginning of period	8,199	8,785
Cash and cash equivalents, end of period	11,752	10,290
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment and other assets acquired by accounts payable	1,012	2,302
Supplemental cash flow disclosures:
Cash paid for interest	33	19
Cash paid for income taxes	$ 494	$ 445

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Chuy’s Holdings, Inc. (the “Company” or “Chuy’s”) develops and operates Chuy’s restaurants throughout the United States. Chuy’s is a growing, full-service restaurant concept offering a distinct menu of authentic, freshly-prepared Mexican and Tex-Mex inspired food. As of June 30, 2019 , the Company operated 102 restaurants in 19 states. In the opinion of management, the accompanying unaudited condensed consolidated financial statements and the related notes reflect all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the Company’s financial position, results of operations and cash flows for the periods presented. The unaudited condensed consolidated financial statements have been prepared in accordance with Generally Accepted Accounting Principles (“GAAP”), except that certain information and notes have been condensed or omitted pursuant to rules and regulations of the Securities and Exchange Commission (the “SEC”). Results for interim periods are not necessarily indicative of the results that may be expected for the full fiscal year. The unaudited condensed consolidated financial statements should be read in conjunction with consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 30, 2018 . The accompanying condensed consolidated balance sheet as of December 30, 2018 , has been derived from our audited consolidated financial statements. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect certain reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses for the period. Actual results could differ from those estimates. Certain prior year amounts have been reclassified in our unaudited condensed consolidated financial statements to conform to current year presentation. The Company operates on a 52- or 53- week fiscal year that ends on the last Sunday of the calendar year. Each quarterly period has 13 weeks, except for a 53-week year when the fourth quarter has 14 weeks. Our 2019 and 2018 fiscal years both consist of 52 weeks.

Updates to Significant Accounti

Updates to Significant Accounting Policies Updates to Significant Accounting Policies	6 Months Ended
	Jun. 30, 2019
Updates to Significant Accounting Policies [Abstract]
Updates to Significant Accounting Policies	Updates to Significant Accounting Policies Leases On December 31, 2018, the first day of fiscal year 2019, the Company adopted the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2016-02, "Leases (Topic 842)." As a result, the Company updated its significant accounting policy for leases. For the impact of the adoption on the Company's consolidated financial statements see Note 3, Recent Accounting Pronouncements and for additional information about our lease arrangements see Note 10, Leases in the notes to our unaudited condensed consolidated financial statements. The Company determines if a contract contains a lease at inception. The Company's material long-term operating lease agreements are for the land and buildings for our restaurants as well as our corporate offices. The lease term begins on the date that the Company takes possession under the lease, including the pre-opening period during construction, when in many cases the Company is not making rent payments (“Rent Holiday”). Operating lease assets and liabilities are recognized at the lease commencement date for material leases with a term of greater than 12 months. Operating lease liabilities represent the present value of future minimum lease payments. Since our leases do not provide an implicit rate, our operating lease liabilities are calculated using the Company's secured incremental borrowing rate at lease commencement. We have no outstanding debt, and as a result, we estimate this rate based on prevailing financial market conditions, comparable companies, credit analysis and management judgment. Minimum lease payments include only fixed lease components of the agreement, as well as variable rate payments that depend on an index, initially measured using the index at the lease commencement date. Operating lease assets represent our right to use an underlying asset and are based upon the operating lease liabilities adjusted for prepaid or accrued lease payments, initial direct costs and lease incentives. Lease incentives are recognized when earned and reduce our operating lease asset related to the lease. They are amortized through the operating lease assets as reductions of rent expense over the lease term. Operating lease expense is recognized on a straight-line basis over the lease term. Certain of the Company’s operating leases contain clauses that provide for contingent rent based on a percentage of sales greater than certain specified target amounts. Variable lease payments that do not depend on a rate or index, escalation in the index subsequent to the initial measurement, payments associated with non-lease components such as common area maintenance, real estate taxes and insurance, and short-term lease payments (leases with a term with 12 months or less) are expensed as incurred or when the achievement of the specified target that triggers the contingent rent is considered probable.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Leases The Company adopted ASU 2016-02 Leases (Topic 842) on December 31, 2018, the first day of fiscal year 2019. This update requires a lessee to recognize on the balance sheet the right-of-use assets and lease liabilities for leases with a lease term of more than twelve months. This update also requires additional disclosures about the amount, timing, and uncertainty of cash flows arising from leases. This standard is effective for interim and annual periods beginning after December 15, 2018. We elected the optional transition method option to apply the standard as of the effective date and therefore, we will not apply the standard to the comparative periods presented in our consolidated financial statements. The adoption of this standard had a significant impact on the Company’s consolidated balance sheet as we recognized the right-of-use assets and lease liabilities for our operating leases. The adoption had an immaterial impact on the consolidated statement of income, cash flows and overall liquidity. We elected to utilize the three practical expedients permitted within the standard, which eliminates the requirement to reassess the conclusions about historical lease identifications, lease classifications, and initial direct costs. We did not elect the hindsight practical expedient, which permits the use of hindsight when determining lease terms and impairments of right-of-use assets. Additionally, we elected to utilize the short-term lease exception policy, which allows us to not apply the recognition requirements of this standard to leases with a term of 12 months or less. The effect of the changes made to the Company's condensed consolidated balance sheet as of December 31, 2018 for the adoption of ASU 2016-02 Leases (Topic 842) are as follows: Assets December 30, 2018 Adoption of Leases (Topic 842) December 31, 2018 Non-current assets: Operating lease assets — 170,316 170,316 Other assets and intangible assets, net 2,425 (2,093 ) 332 Liabilities and Stockholders' Equity Current Liabilities: Operating lease liability — 8,694 8,694 Deferred lease incentives 2,959 (2,959 ) — Non-current liabilities: Deferred tax liability, less current portion 2,601 (106 ) 2,495 Accrued deferred rent 14,516 (14,516 ) — Deferred lease incentives, less current portion 39,473 (39,473 ) — Operating lease liabilities, less current portion — 216,932 216,932 Stockholders' equity: Retained earnings 94,192 (349 ) 93,843 The Company reviewed all other recently issued accounting pronouncements and concluded that they were either not applicable or not expected to have a significant impact on the Company's consolidated financial statements.

Net Income Per Share

Net Income Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Net Income Per Share	Net Income Per Share The number of shares and net income per share data for all periods presented are based on the historical weighted-average shares of common stock outstanding. Basic net income per share of the Company's common stock is computed by dividing net income by the weighted-average number of shares of common stock outstanding for the period. Diluted net income per share of the Company's common stock is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential shares of common stock equivalents outstanding during the period using the treasury stock method for dilutive options and deferred shares (these deferred shares were granted under the Chuy's Holdings, Inc. 2012 Omnibus Equity Incentive Plan (the "2012 Plan"), and are referred to herein as "restricted stock units"). For the thirteen weeks ended June 30, 2019 and July 1, 2018 , there were approximately 73,200 and 4,600 shares, respectively, of common stock equivalents that were excluded from the calculation of diluted net income per share because their inclusion would have been anti-dilutive. For the twenty-six weeks ended June 30, 2019 and July 1, 2018, there were approximately 48,700 and 6,200 shares, respectively, of common stock equivalents that were excluded from the calculation of diluted net income per share because their inclusion would have been anti-dilutive. The computation of basic and diluted income per share is as follows: Thirteen Weeks Ended Twenty-Six Weeks Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 BASIC Net income $ 6,245 $ 6,456 $ 9,462 $ 9,639 Weighted-average common shares outstanding 16,804,465 16,936,807 16,838,052 16,936,815 Basic net income per common share $ 0.37 $ 0.38 $ 0.56 $ 0.57 DILUTED Net income $ 6,245 $ 6,456 $ 9,462 $ 9,639 Weighted-average common shares outstanding 16,804,465 16,936,807 16,838,052 16,936,815 Dilutive effect of stock options and restricted stock units 55,192 135,372 64,604 130,900 Weighted-average of diluted shares 16,859,657 17,072,179 16,902,656 17,067,715 Diluted net income per common share $ 0.37 $ 0.38 $ 0.56 $ 0.56

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company has outstanding awards under the Chuy's Holdings, Inc. 2006 Stock Option Plan (the "2006 Plan") and the 2012 Plan. The 2006 Plan was terminated by the board effective July 27, 2012, and no further awards may be granted under the plan after such date. However, the termination of the 2006 Plan did not affect outstanding awards granted. Options granted under these plans vest over five years from the date of grant and have a maximum term of 10 years. Restricted stock units granted under the 2012 Plan vest over four to five years from the date of grant. As of June 30, 2019 , a total of 339,738 shares of common stock are reserved and remain available for issuance under the 2012 Plan. Stock-based compensation expense recognized in the accompanying condensed consolidated income statements was approximately $872,000 and $821,000 for the thirteen weeks ended June 30, 2019 and July 1, 2018 , respectively, and $1,622,000 and $1,557,000 for the twenty-six weeks ended June 30, 2019 and July 1, 2018 , respectively. Stock Options A summary of stock-based compensation activity related to stock options for the twenty-six weeks ended June 30, 2019 are as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 30, 2018 246,831 $ 19.67 Exercised (16,643 ) 8.02 Forfeited — — Outstanding at June 30, 2019 230,188 $ 20.51 2.86 $ 1,200 Exercisable at June 30, 2019 229,619 $ 20.49 2.85 $ 1,200 The aggregate intrinsic value in the table above is obtained by subtracting the exercise price from the estimated fair value of the underlying common stock as of June 30, 2019 and multiplying this result by the related number of options outstanding and exercisable at June 30, 2019 . The estimated fair value of the common stock as of June 30, 2019 used in the above calculation was $22.92 per share, the closing price of the Company’s common stock on June 28, 2019, the last trading day of the second quarter. The total intrinsic value of options exercised during the twenty-six weeks ended June 30, 2019 was approximately $235,000 . The fair value of options vested during the twenty-six weeks ended June 30, 2019 was approximately $6,000 . There was approximately $1,000 of total unrecognized compensation expense related to options granted under the 2006 Plan and the 2012 Plan as of June 30, 2019 . This expense will be recognized ratably over the next year. Restricted Stock Units A summary of stock-based compensation activity related to restricted stock units for the twenty-six weeks ended June 30, 2019 are as follows: Shares Weighted Average Fair Value Weighted Outstanding at December 30, 2018 368,402 $ 27.01 Granted 175,518 22.39 Vested (119,181 ) 27.22 Forfeited (13,118 ) 25.72 Outstanding at June 30, 2019 411,621 $ 25.02 2.89 The fair value of the restricted stock units is the quoted market value of our common stock on the date of grant. As of June 30, 2019 , total unrecognized stock-based compensation expense related to non-vested restricted stock units was approximately $9.1 million . This amount is expected to be recognized evenly over the remaining vesting period of the grants.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Revolving Credit Facility On November 30, 2012, the Company entered into a $25.0 million Revolving Credit Facility with Wells Fargo Bank, National Association. On October 30, 2015, the Company entered into an amendment to its Revolving Credit Facility to, among other things, (1) extend the maturity date of the Revolving Credit Facility to October 30, 2020 from November 30, 2017 and (2) revise the applicable margins and leverage ratios that determine the commitment fees and interest rates payable by the Company under the Revolving Credit Facility. Under the Company's Revolving Credit Facility, the Company may request to increase the size of the Revolving Credit Facility by up to an additional $25.0 million , in minimum principal amounts of $5.0 million or the remaining amount of the $25.0 million if less than $5.0 million (the "Incremental Revolving Loan"), which Incremental Revolving Loan will be effective after 10 days written notice to the agent. In the event that any of the lenders fund the Incremental Revolving Loan, the terms and provisions of the Incremental Revolving Loan will be the same as under the Company's Revolving Credit Facility. Borrowings under the Revolving Credit Facility generally bear interest at a variable rate based upon the Company's election, of (i) the base rate (which is the highest of prime rate, federal funds rate plus 0.5% or one month LIBOR plus 1.0% ), or (ii) LIBOR, plus, in either case, an applicable margin based on the Company's consolidated total lease adjusted leverage ratio (as defined in the Revolving Credit Facility agreement). The Revolving Credit Facility also requires payment for commitment fees that accrue on the daily unused commitment of the lender at the applicable margin, which varies based on the Company's consolidated total lease adjusted leverage ratio. The Revolving Credit Facility also requires compliance with a fixed charge coverage ratio, a lease adjusted leverage ratio and certain non-financial covenants. The Revolving Credit Facility also places certain restrictions on the payment of dividends and distributions. Under the Revolving Credit Facility, the Company may declare and make dividend payments so long as (i) no default or event of default has occurred and is continuing or would result therefrom and (ii) immediately after giving effect to any such dividend payment, on a pro forma basis, the lease adjusted leverage ratio does not exceed 3.50 to 1.00. The obligations under the Company’s Revolving Credit Facility are secured by a first priority lien on substantially all of the Company’s assets. As of June 30, 2019 , the Company had no borrowings under our Revolving Credit Facility.

Accrued Liabilities

Accrued Liabilities	6 Months Ended
	Jun. 30, 2019
Payables and Accruals [Abstract]
Accrued Liabilities	Accrued Liabilities The major classes of accrued liabilities at June 30, 2019 and December 30, 2018 are summarized as follows: June 30, 2019 December 30, 2018 Accrued compensation and related benefits $ 11,960 $ 6,807 Other accruals 5,620 3,604 Sales and use tax 3,252 2,848 Deferred gift card revenue 1,571 2,176 Property tax 1,977 1,786 Total accrued liabilities $ 24,380 $ 17,221

Share Repurchase Program

Share Repurchase Program	6 Months Ended
	Jun. 30, 2019
Share Repurchase Program [Abstract]
Share repurchase program	Share Repurchase Program On October 26, 2017, the Company's board of directors approved a share repurchase program under which it authorized the Company, at its discretion, to repurchase up to $30.0 million of its common stock through December 31, 2019. Repurchases of the Company's outstanding common stock will be made in accordance with applicable laws and may be made at management's discretion from time to time in the open market, through privately negotiated transactions or otherwise, including pursuant to Rule 10b5-1 trading plans. There is no guarantee as to the exact number of shares to be repurchased by the Company. The timing and extent of repurchases will depend upon several factors, including market and business conditions, regulatory requirements and other corporate considerations, and repurchases may be discontinued at any time. We repurchased approximately 176,000 and 256,000 shares of common stock for $3.9 million and $5.7 million , respectively, during the thirteen and twenty-six weeks ended June 30, 2019 , respectively. As of June 30, 2019 , we have $20.7 million remaining to be repurchased under this plan.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	Commitments and Contingencies On June 11, 2019, James Dulanto filed a lawsuit against the Company in the Circuit Court of the Fifteenth Judicial Circuit in and for Palm Beach County, Florida on behalf of a purported class of assistant managers employed during a three year period. It alleged that assistant managers were not paid overtime compensation during and after training because they were misclassified as exempt employees. The lawsuit sought damages for overtime hours, liquidated damages, pre-judgment interest, attorney's fees, costs and other relief. On July 12, 2019, we reached an agreement providing for an opt-in collective action settlement. The parties will file a motion seeking judicial approval of the settlement. We believe it is likely that the motion will be approved by the court. As of June 30, 2019, we accrued $0.8 million to settle claims, attorney's fees, and other legal costs related to this lawsuit. The amount of the accrual is based on the estimated opt-in participation and we may ultimately incur liabilities greater or less than the accrued amount. We are also involved in various other legal actions arising in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on our condensed consolidated financial position, results of operations, or cash flows.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Lessee, Operating Leases	Leases The Company determines if a contract contains a lease at inception. The Company's material long-term operating lease agreements are for the land and buildings for our restaurants as well as our corporate offices. The initial lease terms range from 10 years to 15 years, most of which include renewal options of 10 to 15 years. The lease term is generally the minimum of the noncancelable period or the lease term including renewal options which are reasonably certain of being exercised up to a term of approximately 20 years. Some of the leases provide for base rent, plus additional rent based on gross sales, as defined in each lease agreement. The Company is also generally obligated to pay certain real estate taxes, insurance and common area maintenance charges, and various other expenses related to properties, which are expensed as incurred. Rent expense is paid to various landlords including several companies owned and controlled by the Company’s founders and one of its former executive officers. Components of operating lease costs are as follows for the thirteen weeks ended June 30, 2019 : Lease cost Classification Unrelated Parties Related Party Total Operating lease cost (a) Occupancy, General and administrative expenses and Property and equipment, net $ 5,571 $ 576 $ 6,147 Variable lease cost Occupancy 121 177 298 $ 5,692 $ 753 $ 6,445 (a) Includes short-term operating lease costs which are immaterial. Components of operating lease costs are as follows for the twenty-six weeks ended June 30, 2019 : Lease cost Classification Unrelated Parties Related Party Total Operating lease cost (a) Occupancy, General and administrative expenses and Property and equipment, net $ 11,007 $ 1,152 $ 12,159 Variable lease cost Occupancy 222 328 550 $ 11,229 $ 1,480 $ 12,709 (a) Includes short-term operating lease costs which are immaterial. Weighted average lease term and discount rate are as follows: June 30, 2019 Weighted average remaining lease term (in years) 15.4 Weighted average discount rate 7.8 % Supplemental cash flow disclosures for the twenty-six weeks ended June 30, 2019 : June 30, 2019 Cash paid for operating lease liabilities $ 12,683 Operating lease assets obtained in exchange for operating lease liabilities (a) 173,949 (a) Includes the transition adjustment for the adoption of Leases (Topic 842) as discussed in Note 3, Recent Accounting Pronouncements in the notes to our unaudited condensed consolidated financial statements. As a result of the store closures, the Company also shortened the remaining life of the related leases and recorded a $1.3 million reduction to the operating lease assets and liabilities during the first quarter of 2019. Supplemental balance sheet disclosures: Operating leases Classification June 30, 2019 Right-of-use assets Operating lease assets $ 170,094 Current lease liabilities Operating lease liability $ 9,412 Non-current lease liabilities Operating lease liability, less current portion 215,899 Total lease liabilities $ 225,311 Future minimum rent payments for our operating leases for each of the next five years as of June 30, 2019 are as follows: Unrelated Parties Related Party Total Fiscal year ending: Remainder of 2019 $ 11,953 $ 1,140 $ 13,093 2020 24,423 2,286 26,709 2021 24,707 2,292 26,999 2022 24,550 1,439 25,989 2023 24,918 1,446 26,364 Thereafter 269,948 1,205 271,153 Total minimum lease payments 380,499 9,808 390,307 Less: imputed interest 163,365 1,631 164,996 Present value of lease liabilities $ 217,134 $ 8,177 $ 225,311 As of June 30, 2019 , operating lease payments include $147.7 million related to options to extend lease terms that are reasonably certain of being exercised and exclude approximately $16.1 million of legally binding minimum lease payments for leases signed but not yet commenced. As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting, future minimum rent payments for our operating leases for each of the next five years and in total are as follows as of December 30, 2018: Unrelated Parties Related Party Total Fiscal year ending: 2019 $ 23,638 $ 2,279 $ 25,917 2020 25,184 2,286 27,470 2021 25,620 2,292 27,912 2022 25,463 1,439 26,902 2023 25,832 1,446 27,278 Thereafter 294,112 1,205 295,317 Total minimum lease payments $ 419,849 $ 10,947 $ 430,796 The above future minimum rental amounts exclude the amortization of deferred lease incentives, renewal options that are not reasonably assured of renewal, and contingent rent. The Company generally has escalating rents over the term of the leases and records rent expense on a straight-line basis.

Closure costs

Closure costs	6 Months Ended
	Jun. 30, 2019
Closure costs [Abstract]
Closure costs	Closure costs We recorded closure costs of approximately $0.2 million and $0.6 million for the thirteen and twenty-six weeks ended June 30, 2019 , respectively, associated with two restaurants closed during the first quarter of 2019, one in Atlanta, Georgia, and one in Miami, Florida.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent events Subsequent to June 30, 2019 , the Company opened one new restaurant for a total of 103 restaurants in 19 states.

Updates to Significant Accoun_2

Updates to Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
Updates to Significant Accounting Policies [Abstract]
Lessee, Leases	Leases On December 31, 2018, the first day of fiscal year 2019, the Company adopted the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2016-02, "Leases (Topic 842)." As a result, the Company updated its significant accounting policy for leases. For the impact of the adoption on the Company's consolidated financial statements see Note 3, Recent Accounting Pronouncements and for additional information about our lease arrangements see Note 10, Leases in the notes to our unaudited condensed consolidated financial statements. The Company determines if a contract contains a lease at inception. The Company's material long-term operating lease agreements are for the land and buildings for our restaurants as well as our corporate offices. The lease term begins on the date that the Company takes possession under the lease, including the pre-opening period during construction, when in many cases the Company is not making rent payments (“Rent Holiday”). Operating lease assets and liabilities are recognized at the lease commencement date for material leases with a term of greater than 12 months. Operating lease liabilities represent the present value of future minimum lease payments. Since our leases do not provide an implicit rate, our operating lease liabilities are calculated using the Company's secured incremental borrowing rate at lease commencement. We have no outstanding debt, and as a result, we estimate this rate based on prevailing financial market conditions, comparable companies, credit analysis and management judgment. Minimum lease payments include only fixed lease components of the agreement, as well as variable rate payments that depend on an index, initially measured using the index at the lease commencement date. Operating lease assets represent our right to use an underlying asset and are based upon the operating lease liabilities adjusted for prepaid or accrued lease payments, initial direct costs and lease incentives. Lease incentives are recognized when earned and reduce our operating lease asset related to the lease. They are amortized through the operating lease assets as reductions of rent expense over the lease term. Operating lease expense is recognized on a straight-line basis over the lease term. Certain of the Company’s operating leases contain clauses that provide for contingent rent based on a percentage of sales greater than certain specified target amounts. Variable lease payments that do not depend on a rate or index, escalation in the index subsequent to the initial measurement, payments associated with non-lease components such as common area maintenance, real estate taxes and insurance, and short-term lease payments (leases with a term with 12 months or less) are expensed as incurred or when the achievement of the specified target that triggers the contingent rent is considered probable.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Tables)	6 Months Ended
	Jun. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
The effect of the changes for the adoption of ASU 2016-02	The effect of the changes made to the Company's condensed consolidated balance sheet as of December 31, 2018 for the adoption of ASU 2016-02 Leases (Topic 842) are as follows: Assets December 30, 2018 Adoption of Leases (Topic 842) December 31, 2018 Non-current assets: Operating lease assets — 170,316 170,316 Other assets and intangible assets, net 2,425 (2,093 ) 332 Liabilities and Stockholders' Equity Current Liabilities: Operating lease liability — 8,694 8,694 Deferred lease incentives 2,959 (2,959 ) — Non-current liabilities: Deferred tax liability, less current portion 2,601 (106 ) 2,495 Accrued deferred rent 14,516 (14,516 ) — Deferred lease incentives, less current portion 39,473 (39,473 ) — Operating lease liabilities, less current portion — 216,932 216,932 Stockholders' equity: Retained earnings 94,192 (349 ) 93,843

Net Income Per Share (Tables)

Net Income Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Basic net income per common share	The computation of basic and diluted income per share is as follows: Thirteen Weeks Ended Twenty-Six Weeks Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 BASIC Net income $ 6,245 $ 6,456 $ 9,462 $ 9,639 Weighted-average common shares outstanding 16,804,465 16,936,807 16,838,052 16,936,815 Basic net income per common share $ 0.37 $ 0.38 $ 0.56 $ 0.57 DILUTED Net income $ 6,245 $ 6,456 $ 9,462 $ 9,639 Weighted-average common shares outstanding 16,804,465 16,936,807 16,838,052 16,936,815 Dilutive effect of stock options and restricted stock units 55,192 135,372 64,604 130,900 Weighted-average of diluted shares 16,859,657 17,072,179 16,902,656 17,067,715 Diluted net income per common share $ 0.37 $ 0.38 $ 0.56 $ 0.56

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Summary of Stock-Based Compensation Activity Related to Stock Options	A summary of stock-based compensation activity related to stock options for the twenty-six weeks ended June 30, 2019 are as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 30, 2018 246,831 $ 19.67 Exercised (16,643 ) 8.02 Forfeited — — Outstanding at June 30, 2019 230,188 $ 20.51 2.86 $ 1,200 Exercisable at June 30, 2019 229,619 $ 20.49 2.85 $ 1,200
Summary of Stock-Based Compensation Activity Related to Restricted Stock Units	A summary of stock-based compensation activity related to restricted stock units for the twenty-six weeks ended June 30, 2019 are as follows: Shares Weighted Average Fair Value Weighted Outstanding at December 30, 2018 368,402 $ 27.01 Granted 175,518 22.39 Vested (119,181 ) 27.22 Forfeited (13,118 ) 25.72 Outstanding at June 30, 2019 411,621 $ 25.02 2.89

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	The major classes of accrued liabilities at June 30, 2019 and December 30, 2018 are summarized as follows: June 30, 2019 December 30, 2018 Accrued compensation and related benefits $ 11,960 $ 6,807 Other accruals 5,620 3,604 Sales and use tax 3,252 2,848 Deferred gift card revenue 1,571 2,176 Property tax 1,977 1,786 Total accrued liabilities $ 24,380 $ 17,221

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of operating lease costs	Components of operating lease costs are as follows for the thirteen weeks ended June 30, 2019 : Lease cost Classification Unrelated Parties Related Party Total Operating lease cost (a) Occupancy, General and administrative expenses and Property and equipment, net $ 5,571 $ 576 $ 6,147 Variable lease cost Occupancy 121 177 298 $ 5,692 $ 753 $ 6,445 (a) Includes short-term operating lease costs which are immaterial. Components of operating lease costs are as follows for the twenty-six weeks ended June 30, 2019 : Lease cost Classification Unrelated Parties Related Party Total Operating lease cost (a) Occupancy, General and administrative expenses and Property and equipment, net $ 11,007 $ 1,152 $ 12,159 Variable lease cost Occupancy 222 328 550 $ 11,229 $ 1,480 $ 12,709 (a) Includes short-term operating lease costs which are immaterial. Weighted average lease term and discount rate are as follows: June 30, 2019 Weighted average remaining lease term (in years) 15.4 Weighted average discount rate 7.8 % Supplemental cash flow disclosures for the twenty-six weeks ended June 30, 2019 : June 30, 2019 Cash paid for operating lease liabilities $ 12,683 Operating lease assets obtained in exchange for operating lease liabilities (a) 173,949 (a) Includes the transition adjustment for the adoption of Leases (Topic 842) as discussed in Note 3, Recent Accounting Pronouncements in the notes to our unaudited condensed consolidated financial statements. As a result of the store closures, the Company also shortened the remaining life of the related leases and recorded a $1.3 million reduction to the operating lease assets and liabilities during the first quarter of 2019.
Supplemental balance sheet information	Supplemental balance sheet disclosures: Operating leases Classification June 30, 2019 Right-of-use assets Operating lease assets $ 170,094 Current lease liabilities Operating lease liability $ 9,412 Non-current lease liabilities Operating lease liability, less current portion 215,899 Total lease liabilities $ 225,311
Schedule of Future Minimum Rent Payments for Operating Leases	Future minimum rent payments for our operating leases for each of the next five years as of June 30, 2019 are as follows: Unrelated Parties Related Party Total Fiscal year ending: Remainder of 2019 $ 11,953 $ 1,140 $ 13,093 2020 24,423 2,286 26,709 2021 24,707 2,292 26,999 2022 24,550 1,439 25,989 2023 24,918 1,446 26,364 Thereafter 269,948 1,205 271,153 Total minimum lease payments 380,499 9,808 390,307 Less: imputed interest 163,365 1,631 164,996 Present value of lease liabilities $ 217,134 $ 8,177 $ 225,311
Fiscal Year 2018 Schedule of Future Minimum Rental Payments for Operating Leases	As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting, future minimum rent payments for our operating leases for each of the next five years and in total are as follows as of December 30, 2018: Unrelated Parties Related Party Total Fiscal year ending: 2019 $ 23,638 $ 2,279 $ 25,917 2020 25,184 2,286 27,470 2021 25,620 2,292 27,912 2022 25,463 1,439 26,902 2023 25,832 1,446 27,278 Thereafter 294,112 1,205 295,317 Total minimum lease payments $ 419,849 $ 10,947 $ 430,796

Basis of Presentation (Details)

Basis of Presentation (Details)	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Restaurants	102
Number of States in which Entity Operates	19

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Dec. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 170,094	$ 170,316	$ 0
Other assets and intangibles, net	494	332	2,425
Operating lease liability	9,412	8,694	0
Deferred lease incentives	0	0	2,959
Deferred tax liability, net	1,539	2,495	2,601
Accrued deferred rent	0	0	14,516
Deferred lease incentive, less current portion	0	0	39,473
Operating lease liability, less current portion	215,899	216,932	0
Retained earnings	$ 103,305	93,843	$ 94,192
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		170,316
Other assets and intangibles, net		(2,093)
Operating lease liability		8,694
Deferred lease incentives		(2,959)
Deferred tax liability, net		(106)
Accrued deferred rent		(14,516)
Deferred lease incentive, less current portion		(39,473)
Operating lease liability, less current portion		216,932
Retained earnings		$ (349)

Net Income Per Share (Computati

Net Income Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
BASIC
Net income	$ 6,245	$ 3,217	$ 6,456	$ 3,183	$ 9,462	$ 9,639
Weighted-average common shares outstanding	16,804,465		16,936,807		16,838,052	16,936,815
Basic net income per common share	$ 0.37		$ 0.38		$ 0.56	$ 0.57
DILUTED
Net income	$ 6,245	$ 3,217	$ 6,456	$ 3,183	$ 9,462	$ 9,639
Weighted-average common shares outstanding	16,804,465		16,936,807		16,838,052	16,936,815
Dilutive effect of stock options and restricted stock units	55,192		135,372		64,604	130,900
Weighted-average of diluted shares	16,859,657		17,072,179		16,902,656	17,067,715
Diluted net income per common share	$ 0.37		$ 0.38		$ 0.56	$ 0.56

Net Income Per Share (Narrative

Net Income Per Share (Narrative) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	73,200	4,600	48,700	6,200

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary of Stock-Based Compensation Activity - Stock Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2019
Shares
Outstanding at December 30, 2018	246,831
Exercised	(16,643)
Forfeited	0
Outstanding at June 30, 2019	230,188
Exercisable at June 30, 2019	229,619
Weighted Average Exercise Price
Outstanding at December 30, 2018	$ 19.67
Exercised	8.02
Forfeited	0
Outstanding at June 30, 2019	20.51
Exercisable at June 30, 2019	$ 20.49
Weighted Average Remaining Contractual Term (Years)
Outstanding at June 30, 2019	2 years 10 months 10 days
Exercisable at June 30, 2019	2 years 10 months 6 days
Aggregate Intrinsic Value
Outstanding at June 30, 2019	$ 1,200
Exercisable at June 30, 2019	$ 1,200

Stock-Based Compensation (Sum_2

Stock-Based Compensation (Summary of Stock-Based Compensation Activity - Restricted Stock Units) (Details)	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Shares
Outstanding at December 30, 2018 | shares	368,402
Granted | shares	175,518
Vested | shares	(119,181)
Forfeited | shares	(13,118)
Outstanding at June 30, 2019 | shares	411,621
Weighted Average Fair Value
Outstanding at December 30, 2018 | $ / shares	$ 27.01
Granted | $ / shares	22.39
Vested | $ / shares	27.22
Forfeited | $ / shares	25.72
Outstanding at June 30, 2019 | $ / shares	$ 25.02
Weighted Average Remaining Contractual Term [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	2 years 10 months 21 days

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Jun. 28, 2019
Stock-based compensation	$ 872,000	$ 821,000	$ 1,622,000	$ 1,557,000
ShareBasedCompensationArrangementByShareBasedPaymentAwardEstimatedFairValueOfCommonStockPerShare					$ 22.92
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			235,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 6,000
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 1,000		$ 1,000
2012 Omnibus Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	339,738		339,738
2012 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 9,100,000		$ 9,100,000
Minimum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Maximum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			5 years

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - Revolving Credit Facility [Member]	6 Months Ended
	Jun. 30, 2019USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 25,000,000
Debt Instrument, Maturity Date	Oct. 30, 2020
Line of Credit Facility Additional Borrowing Capacity	$ 25,000,000
Letters of Credit, Borrowing Capacity	$ 5,000,000
Line of credit facility, lease adjusted leverage ratio	3.50
Long-term debt	$ 0
Federal Funds Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 30, 2018
Payables and Accruals [Abstract]
Accrued compensation and related benefits	$ 11,960	$ 6,807
Other accruals	5,620	3,604
Sales and use tax	3,252	2,848
Deferred gift card revenue	1,571	2,176
Property tax	1,977	1,786
Total accrued liabilities	$ 24,380	$ 17,221

Share Repurchase Program (Detai

Share Repurchase Program (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Apr. 01, 2018	Jun. 30, 2019	Oct. 26, 2017
Share Repurchase Program [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					$ 30,000
Repurchase of shares of common stock (in shares)	176,000			256,000
Stock Repurchased During Period, Value	$ 3,875	$ 1,818	$ 1,619	$ 5,700
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 20,700			$ 20,700

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Loss Contingencies [Line Items]
Payments for Legal Settlements	$ 0.8

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2019	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Change In Operating Lease Assets and Liabilities Due to Lease Remeasurement	$ 1.3
Operating Lease Payments Related to Options to Extend Lease Term		$ 147.7
Operating Lease Payments, Minimum Lease Payments Excluded, Not Yet Taken Possession of Leases		$ 16.1
Lessor, Operating Lease, Term of Contract		20 years
Minimum [Member]
Lessee, Lease, Description [Line Items]
Initial lease term		10 years
Lease terms renewal		10 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Initial lease term		15 years
Lease terms renewal		15 years

Leases - Components of operatin

Leases - Components of operating lease costs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 6,147	$ 12,159
Variable lease cost	298	550
Lease cost	6,445	12,709
Unrelated Parties [Member]
Lessee, Lease, Description [Line Items]
Operating lease cost	5,571	11,007
Variable lease cost	121	222
Lease cost	5,692	11,229
Related Parties [Member]
Lessee, Lease, Description [Line Items]
Operating lease cost	576	1,152
Variable lease cost	177	328
Lease cost	$ 753	$ 1,480

Leases - Weighted average lease

Leases - Weighted average lease term and discount rate (Details)	Jun. 30, 2019
Leases [Abstract]
Weighted average remaining lease term (in years)	15 years 4 months 21 days
Weighted average discount rate	7.81%

Leases - Supplemental cash flow

Leases - Supplemental cash flows disclosures (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Leases [Abstract]
Cash paid for operating lease payments	$ 12,683
Operating lease assets obtained in exchange for operating lease liabilities	$ 173,949

Leases - Supplemental balance s

Leases - Supplemental balance sheet disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Dec. 30, 2018
Leases [Abstract]
Operating lease assets	$ 170,094	$ 170,316	$ 0
Operating lease liability	9,412	8,694	0
Operating lease liability, less current portion	215,899	$ 216,932	$ 0
Operating Lease, Liability	$ 225,311

Leases - Future minimum rent pa

Leases - Future minimum rent payments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 30, 2018
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2019	$ 13,093
2020	26,709
2021	26,999
2022	25,989
2023	26,364
Thereafter	271,153
Total minimum lease payments	390,307
Less: imputed interest	164,996
Operating Lease, Liability	225,311
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019		$ 25,917
2020		27,470
2021		27,912
2022		26,902
2023		27,278
Thereafter		295,317
Total minimum lease payments		430,796
Unrelated Parties [Member]
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2019	11,953
2020	24,423
2021	24,707
2022	24,550
2023	24,918
Thereafter	269,948
Total minimum lease payments	380,499
Less: imputed interest	163,365
Operating Lease, Liability	217,134
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019		23,638
2020		25,184
2021		25,620
2022		25,463
2023		25,832
Thereafter		294,112
Total minimum lease payments		419,849
Related Parties [Member]
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2019	1,140
2020	2,286
2021	2,292
2022	1,439
2023	1,446
Thereafter	1,205
Total minimum lease payments	9,808
Less: imputed interest	1,631
Operating Lease, Liability	$ 8,177
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019		2,279
2020		2,286
2021		2,292
2022		1,439
2023		1,446
Thereafter		1,205
Total minimum lease payments		$ 10,947

Closure costs (Details)

Closure costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Closure costs [Abstract]
Closure costs	$ 216	$ 0	$ 588	$ 0

Subsequent Events (Details)

Subsequent Events (Details)	Aug. 08, 2019Restaurant	Jun. 30, 2019
Subsequent Event [Line Items]
Number of Restaurants		102
Number of States in which Entity Operates		19
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of New Restaurants	1
Number of Restaurants	103
Number of States in which Entity Operates	19