Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2015

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 basis as of March 31, 2015 and September 30, 2014 are summarized as follows (in thousands):

			Fair Value Measurements at Reporting Date Using
Description	March 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	$	10,404	$	10,154	$	250	$	—
Available-for-sale securities	133,928		—		133,928		—
Foreign exchange contracts	31		—		31		—
Convertible debt securities	5,207		—		—		5,207
Stock warrants	70		—		—		70
Total Assets	$	149,640	$	10,154	$	134,209	$	5,277
Liabilities
Foreign exchange contracts	$	15	$	—	$	15	$	—

    The convertible debt securities and stock are included in "Other assets" in the Consolidated Balance Sheets.

			Fair Value Measurements at Reporting Date Using
Description	September 30, 2014		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	$	6,404	$	5,166	$	1,238	$	—
Available-for-sale securities	151,342		—		151,342		—
Total Assets	$	157,746	$	5,166	$	152,580	$	—
Liabilities
Foreign exchange contracts	$	58	$	—	$	58	$	—

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following table presents the reconciliation for all assets and liabilities measured and recorded at fair value on a recurring basis using significant unobservable inputs (Level 3) (in thousands):

	Convertible Debt Securities		Stock Warrants			Total
Balance at September 30, 2014	$	—	$	—		$	—
Additions (1)	4,934		75			5,009
Change in fair value	273		(5		)	268
Balance at March 31, 2015	$	5,207	$	70		$	5,277