Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities of the Company measured at fair value on a recurring and nonrecurring basis as of June 30, 2014 and September 30, 2013 are summarized as follows (in thousands):

			Fair Value Measurements at Reporting Date Using
Description	June 30, 2014		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Recurring fair value measurements
Assets
Cash equivalents	$	30,433	$	2,045	$	28,388	$	—
Available-for-sale securities	128,207		—		128,207		—
Foreign exchange contracts	15		—		15		—
Total Assets	$	158,655	$	2,045	$	156,610	$	—
Liabilities
Foreign exchange contracts	$	4	$	—	$	4	$	—
Nonrecurring fair value measurements
Assets
Note receivable	$	1,007	$	—	$	—	$	1,007

			Fair Value Measurements at Reporting Date Using
Description	September 30, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Recurring fair value measurements
Assets
Cash equivalents	$	7,754	$	6,152	$	1,602	$	—
Available-for-sale securities	90,391		2,199		88,192		—
Foreign exchange contracts	31		—		31		—
Total Assets	$	98,176	$	8,351	$	89,825	$	—
Liabilities
Foreign exchange contracts	$	5	$	—	$	5	$	—