Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 47,935	$ 44,177
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	59,269	59,257
Deferred income taxes	(477)	4,551
Stock-based compensation expense	6,469	5,630
Amortization of landlord contributions	(1,729)	(1,653)
Amortization of deferred debt financing costs	337	367
Loss on asset disposals, net	704	1,797
Asset impairments	763	3,541
Other adjustments	75	266
Changes in operating assets and liabilities:
Accounts receivable	4,246	1,957
Inventories	(1,665)	872
Prepaid expenses	55	(4,905)
Accounts payable	(2,928)	(687)
Accrued expenses	5,325	5,039
Unearned revenues	(1,029)	(656)
Accrued interest	(637)	(623)
Income taxes payable	4,105	(2,563)
Deferred rent liability	1,468	2,550
Deferred landlord contributions	1,469	323
Net cash provided by operating activities	123,755	119,240
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(54,446)	(75,831)
Proceeds from sale of property and equipment	2,260	474
Other investing activities	678	0
Net cash used in investing activities	(51,508)	(75,357)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net repayments on revolving credit facility	(41,000)	(15,200)
Payments on capital lease obligations	(697)	(590)
Dividends paid	(8,445)	(11,829)
Excess tax benefit realized from stock-based compensation	249	619
Restricted stock returned for payment of taxes	(2,191)	(2,629)
Purchases of treasury stock	(18,112)	(14,353)
Net cash used in financing activities	(70,196)	(43,982)
Effect of foreign exchange rate changes on cash	(303)	119
Change in cash and cash equivalents	1,748	20
Cash and cash equivalents at beginning of period	19,636	18,673
Cash and cash equivalents at end of period	21,384	18,693
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	5,713	6,398
Income taxes paid, net	25,616	24,812
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Accrued construction costs	3,904	3,214
Dividends payable	4,904	4,381
Capital lease obligations	$ 740	$ 10,689