Income Taxes (Income Tax Provision) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Income Tax Disclosure [Abstract]
Federal	$ 32,414	$ 25,421	$ 11,855
State	(1,741)	422	946
Foreign	8,623	4,340	684
Current Income Tax Expense	39,296	30,183	13,485
Federal	12,998	35,053	44,072
State	(3,670)	(1,048)	(2,846)
Foreign	405	961	235
Deferred Income Tax Expense	9,733	34,966	41,461
Change in valuation allowance	3,869	2,152	2,834
Provision for income taxes	$ 52,898	$ 67,301	$ 57,780