Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 01, 2012	Jan. 02, 2011	Jan. 03, 2010
Consolidated Statements Of Comprehensive Income [Abstract]
NET INCOME	$ 105,361	$ 87,917	$ 79,744
OTHER COMPREHENSIVE INCOME, BEFORE TAX:
Currency translation adjustment	(380)	(34)	296
Reclassification adjustment for losses included in net income	2,518	2,837	1,790
Other comprehensive income (loss), before tax- total	2,138	2,803	2,086
TAX ATTRIBUTES OF ITEMS IN OTHER COMPREHENSIVE INCOME:
Currency translation adjustment	(842)	(359)	(171)
Reclassification adjustment for losses included in net income	(957)	(1,078)	(680)
Other comprehensive income (loss), tax- total	(1,799)	(1,437)	(851)
OTHER COMPREHENSIVE INCOME, NET OF TAX	339	1,366	1,235
COMPREHENSIVE INCOME	$ 105,700	$ 89,283	$ 80,979