CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 03, 2012	Jun. 28, 2011
Cash flows from operating activities:
Net income	$ 49,121	$ 45,204
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	36,807	34,936
Deferred income taxes	5,637	3,316
Stock-based compensation	6,274	5,946
Tax impact of stock options exercised, net of cancellations	2,095	600
Excess tax benefit related to stock options exercised	(2,008)	(497)
Other	391	412
Changes in assets and liabilities:
Accounts receivable	1,086	10,383
Other receivables	6,875	7,323
Inventories	(3,266)	(9,212)
Prepaid expenses	918	3,121
Other assets	(2,727)	(1,764)
Accounts payable	(14,022)	6,051
Income taxes receivable/payable	1,528	2,091
Other accrued expenses	(14,450)	(13,796)
Cash provided by operating activities	74,259	94,114
Cash flows from investing activities:
Additions to property and equipment	(34,419)	(30,176)
Additions to intangible assets	(1,285)	(358)
Cash used in investing activities	(35,704)	(30,534)
Cash flows from financing activities:
Deemed landlord financing proceeds	201	1,612
Deemed landlord financing payments	(925)	(820)
Proceeds from exercise of stock options	17,907	7,475
Excess tax benefit related to stock options exercised	2,008	497
Purchase of treasury stock	(57,541)	(95,030)
Cash used in financing activities	(38,350)	(86,266)
Net change in cash and cash equivalents	205	(22,686)
Cash and cash equivalents at beginning of period	48,211	81,619
Cash and cash equivalents at end of period	48,416	58,933
Supplemental disclosures:
Interest paid	2,245	2,065
Income taxes paid	$ 12,669	$ 11,248