Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair value of derivative instruments

The following tables set forth certain information regarding our derivative instruments discontinued as cash flow hedging instruments:

		Fair Value of Derivative Instruments
Derivative Instrument	Balance Sheet Location	June 30, 2015		June 30, 2014		September 30, 2014
		(in thousands)
Foreign currency forwards — assets	Receivables, prepaid expenses and other current assets	$	2,833	$	1,496	$	2,420

Derivative financial instruments loss recognized in other comprehensive income

	Amount of Loss Recognized in Other Comprehensive Income on Derivatives
	Three Months Ended June 30,				Nine Months Ended June 30,
Derivative Instrument	2015		2014		2015		2014
	(in thousands)
Foreign currency forwards	$	—	$	497	$	—	$	1,169

Derivative financial instruments loss recognized in income

		Amount of Loss on Derivatives Reclassified into Income from Accumulated Other Comprehensive Income
		Three Months Ended June 30,				Nine Months Ended June 30,
Derivative Instrument	Income Statement Location	2015		2014		2015		2014
		(in thousands)
Foreign currency forwards	Other expense	$	35	$	272	$	422	$	814

Information regarding derivative instruments not designated as hedging instruments

The following tables set forth certain information regarding our derivative instruments not designated as hedging instruments:

		Fair Value Asset (Liability) of Derivative Instruments
Derivative Instrument	Balance Sheet Location	June 30, 2015			June 30, 2014			September 30, 2014
		(in thousands)
Foreign currency forwards	Receivables, prepaid expenses and other current assets	$	8,440		$	—		$	1,152
Cash Convertible Notes hedges	Other assets, net	23,160			46,454			36,994
Cash Convertible Notes embedded derivative	Long-term debt, less current maturities	(23,160		)	(46,454		)	(36,994		)

		Amount of Unrealized Gain (Loss) on Derivatives
		Three Months Ended June 30,				Nine Months Ended June 30,
Derivative Instrument	Income Statement Location	2015		2014		2015		2014
		(in thousands)
Foreign currency forwards	Other expense	$	5,811	$	289	$	7,288	$	289