Reportable Segments (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 01, 2012	Jan. 02, 2011	Oct. 02, 2011
Revenue
Revenue	$ 682,627	$ 611,124
Operating Income
Amortization of intangibles	(8,264)	(6,781)
Operating income	36,093	34,325
ASSETS
TOTAL ASSETS	1,600,627		1,593,988
Reportable Segments
Revenue
Revenue	716,886	641,242
Operating Income
Operating income	45,288	41,945
ASSETS
TOTAL ASSETS	1,711,579		1,680,461
Elimination of inter-segment revenue
Revenue
Revenue	(34,259)	(30,118)
Amounts not allocated to segments
Operating Income
Other expense	(931)	(839)
Assets not allocated to segments and intercompany eliminations
ASSETS
TOTAL ASSETS	$ (110,952)		$ (86,473)