Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2022	Mar. 30, 2021
Operating activities
Net loss	$ (6,429)	$ (1,977)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	5,721	5,587
Deferred income taxes	(84)	(10)
Restaurant impairments, closure costs and asset disposals	496	618
Amortization of debt issuance costs	112	111
Stock-based compensation	1,120	720
Changes in operating assets and liabilities:
Accounts receivable	(513)	71
Inventories	(315)	111
Prepaid expenses and other assets	1,378	(717)
Accounts payable	(716)	3,543
Income taxes	1	0
Operating lease assets and liabilities	(826)	(1,412)
Accrued expenses and other liabilities	(6,005)	(2,866)
Net cash (used in) provided by operating activities	(6,060)	3,779
Investing activities
Purchases of property and equipment	(8,412)	(2,733)
Proceeds from restaurant divestitures	1,577	0
Net cash used in investing activities	(6,835)	(2,733)
Financing activities
Net borrowings from swing line loan	3,195	0
Proceeds from borrowings on long-term debt	10,600	0
Payments on long-term debt	(750)	(5,042)
Payments on finance leases	(505)	(392)
Stock plan transactions and tax withholding on share-based compensation awards	(299)	(335)
Net cash provided by (used in) financing activities	12,241	(5,769)
Net decrease in cash and cash equivalents	(654)	(4,723)
Cash and cash equivalents
Beginning of period	2,255	7,840
End of period	$ 1,601	$ 3,117