Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2021	Mar. 31, 2020
Operating activities
Net loss	$ (1,977)	$ (5,835)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	5,587	5,335
Deferred income taxes	(10)	13
Restaurant impairments, closure costs and asset disposals	618	750
Amortization of debt issuance costs	111	73
Stock-based compensation	720	159
Changes in operating assets and liabilities:
Accounts receivable	71	1,577
Inventories	111	304
Prepaid expenses and other assets	(717)	1,131
Accounts payable	3,543	(106)
Income taxes	0	(52)
Operating lease assets and liabilities	(1,412)	2,885
Accrued expenses and other liabilities	(2,866)	(6,892)
Net cash provided by (used in) operating activities	3,779	(658)
Investing activities
Purchases of property and equipment	(2,733)	(3,919)
Net cash used in investing activities	(2,733)	(3,919)
Financing activities
Proceeds from issuance of long-term debt	0	47,000
Payments on long-term debt	(5,042)	(2,188)
Payments on finance leases	(392)	(163)
Stock plan transactions and tax withholding on share-based compensation awards	(335)	(1)
Net cash (used in) provided by financing activities	(5,769)	44,648
Net (decrease) increase in cash and cash equivalents	(4,723)	40,071
Cash and cash equivalents
Beginning of period	7,840	10,459
End of period	$ 3,117	$ 50,530