Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Cash flows provided from (used for) operating activities:
Net income (loss)	$ (29,463)	$ (31,919)	$ 10,104
Adjustments to reconcile net income to net cash provided from operating activities:
Loss (gain) on disposals of property and equipment	(994)	(74)	312
Stock-based compensation	5,223	5,753	5,812
Gain on bargain purchase	0	0	(230)
Impairment and other lease charges	12,778	3,564	3,685
Depreciation and amortization	81,727	74,674	58,468
Amortization of deferred financing costs	2,170	1,694	1,202
Amortization of bond premium and discount on debt	539	(80)	(913)
Amortization of deferred gains from sale-leaseback transactions	0	0	(1,584)
Deferred income taxes	6,026	(11,982)	(483)
Loss on extinguishment of debt - non-cash	0	129	0
Refundable income taxes	115	(284)	55
Trade and other receivables	(6,417)	(523)	(2,275)
Accounts payable	(5,927)	1,196	(926)
Accrued interest	(245)	(2,917)	146
Accrued payroll, related taxes and benefits	18,103	(538)	2,084
Increase (Decrease) in Other Operating Liabilities	10,993	238	3,998
Change in operating right-of-use assets and operating lease liabilities, net	10,906	3,980	0
Other	(1,589)	5,797	1,314
Net cash provided from operating activities	103,945	48,708	80,769
Cash flows used for investing activities:
New restaurant development	(17,824)	(53,596)	(23,171)
Restaurant remodeling	(15,317)	(50,383)	(31,951)
Other restaurant capital expenditures	(13,064)	(18,922)	(15,726)
Corporate and restaurant information systems	(10,685)	(11,978)	(4,887)
Total capital expenditures	(56,890)	(134,879)	(75,735)
Acquisition of restaurants, net of cash acquired	0	(130,646)	(38,102)
Proceeds from insurance recoveries	2,071	323	642
Properties purchased for sale-leaseback	(15,537)	(1,207)	(2,123)
Proceeds from sale-leaseback transactions	22,499	48,364	8,424
Net cash used for investing activities	(47,857)	(218,045)	(106,894)
Cash flows provided from (used for) financing activities:
Proceeds from issuance of senior secured second lien notes	71,250	422,875	0
Repayments of Term Loan B Facility	(4,625)	(2,125)	0
Retirement of 8% Senior Secured Second Lien Notes	0	(280,500)	0
Borrowings under prior revolving credit facility	0	0	17,000
Repayments under prior revolving credit facility	0	0	(17,000)
Borrowings under new revolving credit facility	150,000	436,000	0
Repayments under new revolving credit facility	(195,750)	(390,250)	0
Payments on finance lease liabilities	(1,617)	(2,170)	(1,811)
Proceeds from lease financing obligations	0	0	2,692
Costs associated with financing long-term debt	(3,303)	(11,516)	(154)
Purchase of treasury shares	(10,053)	(4,017)	0
Net cash provided from (used for) financing activities	5,902	168,297	727
Net increase (decrease) in cash	61,990	(1,040)	(25,398)
Cash and cash equivalents, beginning of period	2,974	4,014	29,412
Cash and cash equivalents, end of period	64,964	2,974	4,014
Supplemental disclosures:
Interest paid on long-term debt	24,714	29,055	23,098
Interest paid on lease financing obligations	104	104	105
Accruals for capital expenditures	1,241	15,062	7,605
Common stock issued for consideration in acquisition	0	145,333	0
Non-cash reduction of capital lease assets and obligation	0	0	2,538
Income taxes paid (refunded), net	$ 153	$ 144	$ (270)