Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Jun. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair value of dervative financial instruments

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

		Fair Value of Derivative Instruments
Derivative Instrument	Balance Sheet Location	June 30, 2013		June 30, 2012		September 30, 2012
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Other assets, net	$	2,395	$	—	$	—

Derivative financial instruments gain (loss) recognized in income

		Amount of (Gain) Loss on Derivatives Reclassified into Income from Accumulated Other Comprehensive Income (Effective Portion)
		Three Months Ended June 30,					Nine Months Ended June 30,
Derivative Instrument	Location of (Gain)	2013			2012		2013			2012
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Other income	$	(1,888	)	$	—	$	(1,888	)	$	—

		Amount of (Gain) Recognized in Income
		Three Months Ended June 30,				Nine Months Ended June 30,
Derivative Instrument	Location of (Gain)	2013		2012		2013			2012
		(in thousands)
Non-designated derivatives:
Gold Collar	Other income	$	—	$	—	$	(151	)	$	—

		Amount of (Gain) on Derivatives Recognized in Income (Ineffective Portion Excluded from Effectiveness Testing)
		Three Months Ended June 30,					Nine Months Ended June 30,
Derivative Instrument	Location of (Gain)	2013			2012		2013			2012
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Other income	$	(41	)	$	—	$	(41	)	$	—

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

		Amount of (Gain) Recognized in Other Comprehensive Income on Derivatives (Effective Portion)
		Three Months Ended June 30,					Nine Months Ended June 30,
Derivative Instrument	Location of (Gain)	2013			2012		2013			2012
		(in thousands)
Designated as cash flow hedging instruments:
Foreign currency forwards	Effective portion of cash flow hedge	$	(500	)	$	—	$	(500	)	$	—