Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2021	Sep. 29, 2020
Operating activities
Net income (loss)	$ 8,403	$ (19,440)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	16,734	16,273
Deferred income taxes	41	72
Restaurant impairments, closure costs and asset disposals	1,441	3,034
Amortization of debt issuance costs	333	260
Stock-based compensation	3,436	1,904
Gain on insurance proceeds	(406)	0
Changes in operating assets and liabilities:
Accounts receivable	(431)	230
Inventories	(221)	75
Prepaid expenses and other assets	(1,893)	(802)
Accounts payable	3,149	3,505
Income taxes	(22)	27
Operating lease assets and liabilities	(649)	4,034
Accrued expenses and other liabilities	(19)	(858)
Net cash provided by operating activities	29,896	8,314
Investing activities
Purchases of property and equipment	(12,965)	(9,887)
Insurance proceeds received for property damage	406	0
Net cash used in investing activities	(12,559)	(9,887)
Financing activities
Proceeds from issuance of long-term debt	0	55,500
Payments on long-term debt	(20,118)	(54,125)
Payments on finance leases	(1,429)	(686)
Debt issuance costs	0	(731)
Stock plan transactions and tax withholding on share-based compensation awards	(481)	(223)
Net cash used in financing activities	(22,028)	(265)
Net decrease in cash and cash equivalents	(4,691)	(1,838)
Cash and cash equivalents
Beginning of period	7,840	10,459
End of period	$ 3,149	$ 8,621