Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2021	Dec. 29, 2020	Dec. 31, 2019
Operating activities
Net income (loss)	$ 3,665	$ (23,259)	$ 1,647
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	22,333	21,709	22,086
Deferred income taxes, net	29	40	68
Restaurant impairments, closure costs and asset disposals	3,538	4,782	7,808
Loss on extinguishment of debt	0	0	746
Amortization of debt issuance costs	444	371	474
Stock-based compensation	4,110	2,497	2,443
Gain on insurance proceeds received for property damage	(406)	(200)	(489)
Changes in operating assets and liabilities:
Accounts receivable	(491)	(392)	(630)
Inventories	(382)	61	(625)
Prepaid expenses and other assets	(492)	(14)	(690)
Accounts payable	4,689	(1,287)	406
Operating lease assets and liabilities	(1,759)	2,847	(2,202)
Income taxes	(64)	59	82
Accrued expenses and other liabilities	951	1,910	(1,064)
Net cash provided by operating activities	36,165	9,124	30,060
Investing activities
Purchases of property and equipment	(18,776)	(11,782)	(17,404)
Franchise restaurant acquisition, net of cash acquired	0	0	(1,387)
Proceeds from disposal of property and equipment	0	0	352
Insurance proceeds received for property damage	406	837	0
Net cash used in investing activities	(18,370)	(10,945)	(18,439)
Financing activities
Proceeds from borrowings on long-term debt	0	55,500	1,917
Payments on long-term debt	(21,556)	(54,313)	(5,875)
Debt issuance costs	0	(731)	(917)
Payment of finance leases	(1,925)	(1,080)	(690)
Stock plan transactions and tax withholding on share-based compensation awards	101	(174)	(252)
Net cash used in financing activities	(23,380)	(798)	(5,817)
Net (decrease) increase in cash and cash equivalents	(5,585)	(2,619)	5,804
Cash and cash equivalents
Beginning of year	7,840	10,459	4,655
End of year	$ 2,255	$ 7,840	$ 10,459