Derivative Instruments (Tables)

12 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Net Gains and Losses Recorded

Net gains and losses related to these contracts are recorded as a component of "Other (expense) income, net" in the accompanying Consolidated Statements of Operations and are as follows for the fiscal years ended September 30, 2016, 2015 and 2014 (in thousands):

	Years Ended September 30,
	2016		2015		2014
Realized gains on derivatives not designated as hedging instruments	$	1,434	$	628	$	185

Notional Amounts Outstanding under Foreign Currency Contracts

The Company had the following notional amounts outstanding under foreign currency contracts that do not qualify for hedge accounting at September 30, 2016 and 2015 (in thousands):

September 30, 2016:

Buy Currency	Notional Amount of Buy Currency	Sell Currency	Maturity	Notional Amount of Sell Currency	Fair Value of Assets		Fair Value of Liabilities
British Pound	246	Swedish Krona	October 2016	2,100	$	1	$	—
U.S. Dollar	6,107	British Pound	October 2016	4,710	2		—
U.S. Dollar	5,815	Chinese Yuan	October 2016	39,000	—		(33		)
Euro	14,976	U.S. Dollar	October 2016	13,300	—		(40		)
Korean Won	2,255	U.S. Dollar	October 2016	2,488,000	1		—
Euro	8,403	British Pound	October 2016	6,500	—		(23		)
U.S. Dollar	311	Israeli Shekel	October 2016	1,169	1		—
					$	5	$	(96	)

September 30, 2015:

Buy Currency	Notional Amount of Buy Currency	Sell Currency	Maturity	Notional Amount of Sell Currency	Fair Value of Assets		Fair Value of Liabilities
U.S. Dollar	1,543	Korean Won	October 2015	1,852,000	$	—	$	(6	)
British Pound	2,157	Euro	October 2015	1,600	—		(29		)
U.S. Dollar	662	Taiwan Dollar	October 2015	22,000	—		(1		)
U.S. Dollar	4,308	British Pound	October 2015	6,520	32		—
Euro	9,300	U.S. Dollar	October 2015	8,253	40		—
U.S. Dollar	5,177	Chinese Yuan	October 2015	33,000	15		—
U.S. Dollar	425	Japanese Yen	October 2015	51,000	—		—
U.S. Dollar	1,336	Japanese Yen	December 2015	160,000	2		—
U.S. Dollar	457	Israeli Shekel	October 2015	1,800	—		—
					$	89	$	(36	)