Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2022	Jun. 30, 2021	Jun. 29, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income	$ 7,141	$ 8,818	$ 9,256	$ 12,782
Adjustments to reconcile net income to net cash flows provided by provided by operating activities:
Depreciation and amortization	3,618	3,917	7,215	7,855
Stock-based compensation expense	1,000	1,000	1,796	1,894
Income tax receivable agreement income	(186)	27	(316)	(50)
Loss on assets held for sale		1,524		1,524
Loss on disposal of assets	42	85	108	111
Impairment of property and equipment	200	400	253	666
Amortization of deferred financing costs			126	126
Deferred income taxes, net			1,180	881
Changes in operating assets and liabilities:
Accounts and other receivables			(592)	(507)
Inventories			68	73
Prepaid expenses and other current assets			262	558
Income taxes receivable			(2,316)	2,014
Other assets			(812)	(312)
Accounts payable			(454)	(557)
Accrued salaries and vacation			(1,891)	279
Accrued insurance			281	362
Other accrued expenses and liabilities			(2,344)	(1,075)
Net cash flows provided by operating activities			11,820	26,624
Cash flows from investing activities:
Proceeds from disposition of restaurants				4,556
Purchase of property and equipment			(8,831)	(8,828)
Net cash flows used in investing activities			(8,831)	(4,272)
Cash flows from financing activities:
Payments on revolver and swingline loan				(22,800)
Minimum tax withholdings related to net share settlements			(218)	(660)
Proceeds from issuance of common stock upon exercise of stock options, net of expenses			1,580	566
Payment of obligations under finance leases			(86)	(53)
Net cash flows provided by (used in) financing activities			1,276	(22,947)
Increase (decrease) in cash and cash equivalents			4,265	(595)
Cash and cash equivalents, beginning of period			30,046	13,219
Cash and cash equivalents, end of period	$ 34,311	$ 12,624	34,311	12,624
Supplemental cash flow information
Cash paid during the period for interest			531	598
Cash paid during the period for income taxes			5,097	2,094
Unpaid purchases of property and equipment			$ 1,388	$ 1,038