Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 26, 2019	Jun. 24, 2020	Jun. 26, 2019
Cash flows from operating activities:
Net income	$ 14,087	$ 9,099	$ 15,000
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	4,454	8,537	9,215
Stock-based compensation expense	600	1,261	1,129
Income tax receivable agreement expense	(94)	170	77
Loss on disposition of restaurants	927		5,051
Loss on disposal of assets	134	127	178
Impairment of property and equipment	200	1,972	227
Amortization of deferred financing costs		126	126
Amortization of favorable and unfavorable leases, net			(362)
Deferred income taxes, net		(363)	5,799
Changes in operating assets and liabilities:
Accounts and other receivables, net		(7,610)	(2,084)
Inventories		55	277
Prepaid expenses and other current assets		3,021	(450)
Other assets		339	23
Accounts payable		3,610	1,057
Accrued salaries and vacation		(2,342)	(487)
Accrued insurance		698	1,163
Income taxes payable		2,069	(3)
Other accrued expenses and liabilities		(9,687)	(23,077)
Net cash flows provided by operating activities		11,082	12,859
Cash flows from investing activities:
Proceeds from disposition of restaurants			4,770
Purchase of property and equipment		(2,479)	(5,898)
Net cash flows used in investing activities		(2,479)	(1,128)
Cash flows from financing activities:
Minimum tax withholdings related to net share settlements		(280)	(295)
Payments on revolver and swingline loan		(10,700)	(15,000)
Borrowings on revolver and swingline loan		52,500	26,000
Proceeds from issuance of common stock upon exercise of stock options, net of expenses		2,165	80
Payment of obligations under finance leases		(16)	(53)
Stock buybacks			(18,151)
Net cash flows provided by (used in) financing activities		43,669	(7,419)
Increase in cash and cash equivalents		52,272	4,312
Cash cash equivalents beginning of period		8,070	6,969
Cash cash equivalents end of period	$ 11,281	60,342	11,281
Supplemental cash flow information
Cash paid during the period for interest		1,738	1,694
Cash paid during the period for income taxes		434	218
Unpaid purchases of property and equipment		$ 846	980
Unpaid stock buybacks			$ 310