Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables summarize assets and liabilities measured and recorded at fair value on a recurring basis in the accompanying Consolidated Balance Sheets as of September 30, 2016 and 2015 (in thousands): 

			Fair Value Measurements at Reporting Date Using
Description	September 30, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Assets:
Cash equivalents	$	143	$	98	$	45	$	—
Available-for-sale securities	6,135		—		6,135		—
Foreign exchange contracts	5		—		5		—
Convertible debt securities	5,774		—		—		5,774
Stock warrant	45		—		—		45
Total Assets	$	12,102	$	98	$	6,185	$	5,819
Liabilities:
Contingent consideration	$	500	$	—	$	—	$	500
Foreign exchange contracts	97		—		97		—
Total Liabilities	$	597	$	—	$	97	$	500

			Fair Value Measurements at Reporting Date Using
Description	September 30, 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	$	11,628	$	10,133	$	1,495	$	—
Available-for-sale securities	133,308		—		133,308		—
Foreign exchange contracts	89		—		89		—
Convertible debt securities	5,337		—		—		5,337
Stock warrant	59		—		—		59
Total Assets	$	150,421	$	10,133	$	134,892	$	5,396
Liabilities:
Contingent consideration	$	811	$	—	$	—	$	811
Foreign exchange contracts	36		—		36		—
	$	847	$	—	$	36	$	811

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

The following table presents the reconciliation of the 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			Contingent Consideration			Total
Balance at September 30, 2015	$	5,337	$	59		$	811		$	6,207
Change in fair value	437		(14		)	(311		)	112
Balance at September 30, 2016	$	5,774	$	45		$	500		$	6,319