Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2018	Apr. 04, 2017
Operating activities
Net loss	$ (3,575)	$ (26,845)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	5,820	6,267
Deferred income taxes	(245)	191
Restaurant impairments, closure costs and asset disposals	1,419	18,460
Amortization of debt issuance costs	210	83
Stock-based compensation	580	298
Changes in operating assets and liabilities:
Accounts receivable	745	1,975
Inventories	(44)	(123)
Prepaid expenses and other assets	651	(260)
Accounts payable	539	1,284
Deferred rent	(288)	679
Income taxes	(26)	68
Accrued expenses and other liabilities	(6,790)	(10,153)
Net cash used in operating activities	(1,004)	(8,076)
Investing activities
Purchases of property and equipment	(4,805)	(6,601)
Net cash used in investing activities	(4,805)	(6,601)
Financing activities
Net borrowings from swing line loan	5,038	(197)
Proceeds from issuance of long-term debt	0	5,915
Payments on long-term debt	0	(37,015)
Issuance of preferred stock and common stock warrants, net of transaction expenses (see Note 9)	0	16,688
Issuance of common stock, net of transaction expenses (see Note 9)	0	31,321
Proceeds from exercise of stock options and employee stock purchase plan	35	38
Debt issuance costs	(1)	(662)
Net cash provided by financing activities	5,072	16,088
Net (decrease) increase in cash and cash equivalents	(737)	1,411
Cash and cash equivalents
Beginning of period	3,361	1,837
End of period	$ 2,624	$ 3,248