Derivative Financial Instruments (Tables)

6 Months Ended

Mar. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts of Outstanding Forward Contracts

As of March 30, 2013 and September 30, 2012, we had outstanding forward contracts with notional amounts equivalent to the following:

Currency Hedged	March 30, 2013		September 30, 2012
	(in thousands)
Canadian Dollar / U.S. Dollar	$	45,531	$	54,133
Euro / U.S. Dollar	51,546		53,716
Chinese Renminbi / U.S. Dollar	3,394		3,666
Japanese Yen / U.S. Dollar	19,911		13,415
Swiss Franc / Euro	1,270		—
All other	5,914		8,973
Total	$	127,566	$	133,903

Net Gains and Losses on Foreign Currency Exposures

Net gains and losses on foreign currency exposures for the three and six month periods ended March 30, 2013 and March 31, 2012 were as follows:

	Three months ended					Six months ended
	March 30, 2013			March 31, 2012		March 30, 2013			March 31, 2012
	(in thousands)
Net losses on foreign currency exposures	$	503		$	2,373	$	988		$	4,570
Net realized and unrealized (gain) loss on forward contracts (excluding the underlying foreign currency exposure being hedged)	$	(2,894	)	$	1,666	$	(3,596	)	$	2,387