Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Consolidated Statements of Comprehensive Income (unaudited) [Abstract]
Net income	$ 13,783	$ 15,539
Other comprehensive income (loss), net of tax:
Foreign currency translation	201	(1,543)
Derivative instruments:
Unrealized net gain	804	245
Net loss reclassified to earnings	101	363
Defined benefit pension plan:
Unrealized net gain	152	154
Net loss reclassified to earnings	90	14
Currency exchange rate change	(134)	72
Other comprehensive income (loss)	1,214	(695)
Comprehensive income	$ 14,997	$ 14,844