Derivative Financial Instruments (Tables)

6 Months Ended

Mar. 29, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts of Outstanding Forward Contracts

As of March 29, 2014 and September 30, 2013, we had outstanding forward contracts with notional amounts equivalent to the following:

Currency Hedged	March 29, 2014		September 30, 2013
	(in thousands)
Canadian Dollar / U.S. Dollar	$	30,427	$	41,852
Euro / U.S. Dollar	99,392		50,902
Chinese Renminbi / U.S. Dollar	4,600		—
Japanese Yen / U.S. Dollar	17,397		6,496
Swiss Franc / U.S. Dollar	7,986		9,678
Israeli New Sheqel / U.S. Dollar	5,906		3,413
All other	10,163		12,093
Total	$	175,871	$	124,434

Net Gains and Losses on Foreign Currency Exposures

Net gains and losses on foreign currency exposures for the three and six months ended March 29, 2014 and March 30, 2013 were as follows:

	Three months ended						Six months ended
	March 29, 2014			March 30, 2013			March 29, 2014			March 30, 2013
	(in thousands)
Net losses on foreign currency exposures	$	1,129		$	503		$	1,993		$	988
Net realized and unrealized gain on forward contracts (excluding the underlying foreign currency exposure being hedged)	$	(69	)	$	(2,894	)	$	(1,697	)	$	(3,596	)