Borrowing Arrangements (Tables)

6 Months Ended

Mar. 30, 2012

Debt Disclosure [Abstract]

Additional Information About The Company's 1.50% Notes

The following tables provide additional information about the Company's 2007 Convertible Notes (in thousands):

	As of
	March 30, 2012		September 30, 2011
Equity component of the convertible notes outstanding	$	—	$	6,061
Principal amount of the convertible notes	$	—	$	26,677
Unamortized discount of the liability component	$	—	$	588
Net carrying amount of the liability component	$	—	$	26,089

Debt Instrument [Line Items]

Internest Expense on Debt [Table Text Block]

	Three-months Ended						Six-months Ended
	March 30, 2012			April 1, 2011			March 30, 2012			April 1, 2011
Effective interest rate on the liability component	6.86		%	6.86		%	6.86		%	6.86		%
Cash interest expense recognized (contractual interest)	$	8		$	100		$	105		$	200
Effective interest expense recognized	$	77		$	333		$	428		$	661