Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Sep. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair value of derivative financial instruments

The following tables set forth certain information regarding our derivative instruments:

		Fair Value of Derivative Instruments
Derivative Instrument	Balance Sheet Location	September 30, 2013		September 30, 2012
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Other assets, net	$	1,813	$	—

Derivative financial instruments gain (loss) recognized in income

		Amount of Gain on Derivatives Reclassified into Income from Accumulated Other Comprehensive Income (Effective Portion)
		Fiscal Years Ended September 30,
Derivative Instrument	Location of (Gain)	2013			2012		2011
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Interest expense / other income	$	(1,974	)	$	—	$	—

		Amount of Gain Recognized in Income
		Fiscal Years Ended September 30,
Derivative Instrument	Location of (Gain)	2013		2012			2011
		(in thousands)
Non-designated derivatives:
Gold Collar	Other income	$	—	$	(151	)	$	—

Derivative financial instruments gain (loss) recognized in other comprehensive income

		Amount of Loss Recognized in Other Comprehensive Income on Derivatives (Effective Portion)
		Fiscal Years Ended September 30,
Derivative Instrument	Location of Loss	2013		2012		2011
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Effective portion of cash flow hedge	$	148	$	—	$	—