Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2017	Dec. 28, 2016	Dec. 30, 2015
Cash flows from operating activities:
Net income	$ 39,594	$ 19,402	$ 35,976
Adjustments to reconcile net income to cash flows provided by operating activities:
Depreciation and amortization	23,720	22,178	21,472
Operating (gains), losses and other charges, net	4,329	26,910	2,366
Amortization of deferred financing costs	596	593	507
(Gain) loss on early extinguishments of debt and leases	130	(5)	225
Deferred income tax expense	10,271	8,844	14,006
Increase (reversal) of tax valuation allowance	216	132	(130)
Share-based compensation	8,541	7,610	6,635
Decrease (increase) in assets:
Receivables	(807)	(2,922)	1,440
Inventories	(192)	71	(166)
Other current assets	(2,380)	4,622	(3,818)
Other assets	(6,327)	(3,582)	(78)
Increase (decrease) in liabilities:
Accounts payable	10,025	4,770	2,345
Accrued salaries and vacations	(6,446)	(7,370)	4,060
Accrued taxes	(23)	96	182
Other accrued liabilities	135	(10,217)	9,479
Other noncurrent liabilities	(3,113)	30	(11,216)
Net cash flows provided by operating activities	78,269	71,162	83,285
Cash flows from investing activities:
Capital expenditures	(18,811)	(19,749)	(26,977)
Acquisition of restaurants and real estate	(12,353)	(14,282)	(5,803)
Proceeds from disposition of property	2,318	1,932	95
Collections on notes receivable	4,405	1,676	1,740
Issuance of notes receivable	(2,706)	(2,233)	(1,790)
Net cash flows used in investing activities	(27,147)	(32,656)	(32,735)
Cash flows from financing activities:
Revolver borrowings	391,900	79,000	231,000
Revolver payments	(351,400)	(55,500)	(121,250)
Long-term debt payments	(3,322)	(3,200)	(58,344)
Deferred financing costs	(1,602)	0	(1,716)
Purchase of treasury stock	(83,050)	(51,643)	(92,644)
Purchase of equity forward contract	0	(6,884)	(13,111)
Proceeds from exercise of stock options	655	889	732
Tax withholding on share-based payments	0	0	(982)
Net bank overdrafts	(1,912)	(247)	4,362
Net cash flows used in financing activities	(48,731)	(37,585)	(51,953)
Increase (decrease) in cash and cash equivalents	2,391	921	(1,403)
Cash and cash equivalents at beginning of period	2,592	1,671	3,074
Cash and cash equivalents at end of period	$ 4,983	$ 2,592	$ 1,671