Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 02, 2018	Oct. 03, 2017
Operating activities
Net loss	$ (8,460)	$ (36,995)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	17,407	18,729
Deferred income taxes	(263)	230
Restaurant impairments, closure costs and asset disposals	5,289	28,867
Loss on extinguishment of debt	626	0
Amortization of debt issuance costs	484	288
Stock-based compensation	2,232	1,193
Gain on insurance proceeds received for property damage	(373)	0
Changes in operating assets and liabilities:
Accounts receivable	489	3,142
Inventories	(647)	(358)
Prepaid expenses and other assets	(402)	(460)
Accounts payable	(2,172)	(1,093)
Deferred rent	(1,278)	1,517
Income taxes	(46)	158
Accrued expenses and other liabilities	(17,754)	(22,147)
Net cash used in operating activities	(4,868)	(6,929)
Investing activities
Purchases of property and equipment	(9,937)	(17,468)
Insurance proceeds received for property damage	500	0
Net cash used in investing activities	(9,437)	(17,468)
Financing activities
Net (payments) borrowings from swing line loan	(101)	6,042
Proceeds from issuance of long-term debt	74,889	10,532
Payments on long-term debt	(84,030)	(37,015)
Issuance of preferred stock and common stock warrants, net of transaction expenses (see Note 9)	0	16,589
Issuance of common stock, net of transaction expenses (see Note 9)	23,157	29,110
Proceeds from exercise of stock options and employee stock purchase plan	654	56
Debt issuance costs	(1,707)	(662)
Net cash provided by financing activities	12,862	24,652
Effect of exchange rate changes on cash	0	(4)
Net (decrease) increase in cash and cash equivalents	(1,443)	251
Cash and cash equivalents
Beginning of period	3,361	1,837
End of period	$ 1,918	$ 2,088