CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 26, 2024	Jun. 28, 2023
Cash flows from operating activities:
Net income	$ 13,545	$ 11,974
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	7,721	7,331
Stock-based compensation expense	1,817	1,613
Income tax receivable agreement income	0	(1)
Fire insurance proceeds for expenses paid and lost profit		151
Loss (gain) on disposition of restaurants	7	(111)
Loss (gain) on disposal of assets	104	(50)
Gain on recovery of insurance proceeds, property, equipment and expenses, net	(41)	(242)
Impairment of property and equipment	0	53
Amortization of deferred financing costs	96	106
Deferred income taxes, net	198	249
Changes in operating assets and liabilities:
Accounts and other receivables	22	(1,355)
Inventories	169	401
Prepaid expenses and other current assets	2,116	189
Income taxes payable	86	4,227
Other assets	(134)	(81)
Accounts payable	259	(1,095)
Accrued salaries and vacation	2,450	1,826
Accrued insurance	99	360
Payment related to tax receivable agreement	(399)
Other accrued expenses and liabilities	2	(3,749)
Net cash flows provided by operating activities	28,117	21,796
Cash flows from investing activities:
Proceeds from disposition of restaurants	100	175
Proceeds from fire insurance for property and equipment	41	163
Purchase of property and equipment	(10,687)	(9,237)
Net cash flows used in investing activities	(10,546)	(8,899)
Cash flows from financing activities:
Proceeds from borrowings on revolver and swingline loans	14,000	2,000
Payments on revolver and swingline loan	(11,000)	(8,000)
Minimum tax withholdings related to net share settlements	(148)	(171)
Proceeds from issuance of common stock upon exercise of stock options, net of expenses	1,057	824
Payment of obligations under finance leases	(101)	(76)
Repurchases of common stock	(18,202)	(17,784)
Net cash flows used in by financing activities	(14,394)	(23,207)
Increase (decrease) in cash and cash equivalents	3,177	(10,310)
Cash and cash equivalents, beginning of period	7,288	20,493
Cash and cash equivalents, end of period	10,465	10,183
Supplemental cash flow information
Cash paid during the period for interest	3,061	2,077
Cash paid during the period for income taxes	4,925	45
Unpaid purchases of property and equipment	4,351	5,894
Unpaid repurchases of common stock and excise tax	$ 742	$ 518