Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2017	Sep. 27, 2016
Operating activities
Net loss	$ (36,995)	$ (26,301)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	18,729	20,983
Deferred income taxes	230	1,124
Restaurant impairments, closure costs and asset disposals	28,867	12,903
Amortization of debt issuance costs	288	91
Stock-based compensation	1,193	2,021
Gain on insurance proceeds received for property damage	0	(416)
Changes in operating assets and liabilities:
Accounts receivable	3,142	194
Inventories	(358)	(717)
Prepaid expenses and other assets	(460)	(1,315)
Accounts payable	(1,093)	(3,182)
Deferred rent	1,517	4,480
Income taxes	158	121
Accrued expenses and other liabilities	(22,147)	6,078
Net cash (used in) provided by operating activities	(6,929)	16,064
Investing activities
Purchases of property and equipment	(17,468)	(33,784)
Insurance proceeds received for property damage	0	500
Net cash used in investing activities	(17,468)	(33,284)
Financing activities
Net borrowings from swing line loan	6,042	2,365
Proceeds from issuance of long-term debt	10,532	14,900
Payments on long-term debt	(37,015)	(1,000)
Issuance of preferred stock and common stock warrants, net of transaction expenses (see Note 9)	16,589	0
Issuance of common stock, net of transaction expenses (see Note 9)	29,110	0
Proceeds from exercise of stock options and employee stock purchase plan	56	1,065
Debt issuance costs	(662)	(98)
Net cash provided by financing activities	24,652	17,232
Effect of exchange rate changes on cash	(4)	42
Net increase in cash and cash equivalents	251	54
Cash and cash equivalents
Beginning of period	1,837	1,912
End of period	$ 2,088	$ 1,966