Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2021	Jun. 30, 2020
Operating activities
Net income (loss)	$ 3,706	$ (19,313)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	11,163	10,732
Deferred income taxes	16	47
Restaurant impairments, closure costs and asset disposals	898	3,029
Amortization of debt issuance costs	222	149
Stock-based compensation	2,283	1,253
Gain on insurance proceeds	(406)	0
Changes in operating assets and liabilities:
Accounts receivable	(521)	1,190
Inventories	(1)	306
Prepaid expenses and other assets	(961)	87
Accounts payable	3,060	2,722
Income taxes	(26)	(77)
Operating lease assets and liabilities	830	7,507
Accrued expenses and other liabilities	2,983	(925)
Net cash provided by operating activities	23,246	6,707
Investing activities
Purchases of property and equipment	(7,476)	(6,810)
Net cash used in investing activities	(7,476)	(6,810)
Financing activities
Proceeds from issuance of long-term debt	0	55,500
Payments on long-term debt	(5,042)	(2,375)
Payments on finance leases	(965)	(402)
Debt issuance costs	0	(731)
Stock plan transactions and tax withholding on share-based compensation awards	(279)	(272)
Net cash (used in) provided by financing activities	(6,286)	51,720
Net increase in cash and cash equivalents	9,484	51,617
Cash and cash equivalents
Beginning of period	7,840	10,459
End of period	$ 17,324	$ 62,076