Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2019	Dec. 26, 2018	Dec. 27, 2017
Cash flows from operating activities
Net income (loss)	$ 24,900	$ (8,994)	$ 8,619
Adjustments to reconcile changes in net income (loss) to net cash provided by operating activities:
Depreciation and amortization	17,855	17,825	18,128
Stock-based compensation expense	2,474	2,005	1,056
Income tax receivable agreement expense (income)	57	(761)	(5,570)
Gain (Loss) on Disposition of Business	(5,058)	0	0
Loss on disposal of assets	266	278	799
Impairment of property, equipment and ROU Asset	3,559	5,147	32,594
Closed-store reserves	0	4,503	1,051
Amortization of deferred financing costs	251	280	304
Amortization of other intangible assets, net	0	(47)	(119)
Deferred income taxes, net	9,578	(3,428)	250
Changes in operating assets and liabilities:
Accounts and other receivables, net	1,094	(2,387)	(294)
Inventories	338	(190)	(177)
Prepaid expenses and other current assets	(2,727)	(319)	425
Income taxes receivable/payable	(448)	37	(85)
Other assets	(412)	122	47
Accounts payable	(3,192)	482	1,088
Accrued salaries and benefits	1,044	235	1,585
Accrued insurance	2,364	1,225	407
Payment related to tax receivable agreement	(5,764)	(7,272)	(11,109)
Other accrued expenses and liabilities	(20,160)	36,701	4,547
Restricted cash	0	0	125
Net cash flows provided by operating activities	36,135	45,442	53,671
Cash flows from investing activities
Proceeds from disposition of restaurants	4,770	0	0
Purchase of property and equipment	(15,439)	(27,802)	(36,238)
Net cash flows used in investing activities	(10,669)	(27,802)	(36,238)
Cash flows from financing activities
Proceeds from borrowings on revolver and swingline loans	42,000	13,307	8,000
Payments on revolver and swingline loan	(19,000)	(33,000)	(19,000)
Minimum tax withholdings related to net share settlements	(365)	(114)	0
Proceeds from issuance of common stock upon exercise of stock options, net of expenses	1,450	1,837	93
Payment of obligations under finance leases	(68)	(132)	(144)
Deferred financing costs for revolver loan	0	(138)	0
Repurchases of common stock	(48,382)	(981)	0
Net cash flows used in financing activities	(24,365)	(19,221)	(11,051)
Increase (decrease) in cash and cash equivalents	1,101	(1,581)	6,382
Cash and cash equivalents, beginning of year	6,969	8,550	2,168
Cash and cash equivalents, end of year	8,070	6,969	8,550
Supplemental cash flow information
Cash paid for interest, net of capitalized interest	3,649	3,393	3,314
Cash paid during the year for income taxes, net	558	183	336
Non-cash investing and financing activity
Unpaid purchases of property and equipment	746	1,543	4,741
Borrowing on revolver for financing fees	$ 0	$ 693	$ 0