Investments (Tables)

6 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments by Type of Security

The following tables summarize investments by type of security as of March 31, 2019 and September 30, 2018, respectively (amounts shown in thousands):

March 31, 2019:	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Market Value
Available-for-sale securities:
Corporate debt securities, short-term	$	5,862	$	—	$	(1)	$	5,861
Total	$	5,862	$	—	$	(1)	$	5,861

September 30, 2018:	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Market Value
Available-for-sale securities:
U.S. Treasury, short-term	$	3,693	$	—	$	(10)	$	3,683
Corporate debt securities, short-term	4,779		—		(14)		4,765
Total	$	8,472	$	—	$	(24)	$	8,448

Schedule of Fair Value of Investments Measured on Recurring Basis

The following tables represent the fair value hierarchy of the Company’s investments and acquisition-related contingent consideration as of March 31, 2019 and September 30, 2018, respectively (amounts shown in thousands):

March 31, 2019:	Balance		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Short-term investments:
Corporate debt securities
Financial	$	349	$	—	$	349	$	—
Industrial	1,298		—		1,298		—
Commercial paper
Financial	2,922		—		2,922		—
Industrial	1,292		—		1,292		—
Total assets at fair value	$	5,861	$	—	$	5,861	$	—
Liabilities:
Acquisition-related contingent consideration	1,162		—		—		1,162
Total liabilities at fair value	$	1,162	$	—	$	—	$	1,162

September 30, 2018:	Balance		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Short-term investments:
U.S. Treasury	$	3,683	$	3,683	$	—	$	—
Corporate debt securities
Financial	2,847		—		2,847		—
Industrial	1,918		—		1,918		—
Total assets at fair value	$	8,448	$	3,683	$	4,765	$	—
Liabilities:
Acquisition-related contingent consideration	3,051		—		—		3,051
Total liabilities at fair value	3,051		—		—		3,051

Schedule of Contingent Consideration Measured at Fair Value

The following table includes a summary of the contingent consideration measured at fair value using significant unobservable inputs (Level 3) during the six months ended March 31, 2019 (amounts shown in thousands):

Balance at September 30, 2018	$	3,051
Payment of contingent consideration	(1,818)
Foreign currency effect on contingent consideration	(71)
Balance at March 31, 2019	$	1,162