Investments (Tables)

9 Months Ended

Jun. 30, 2016

Summary of Investments by Type of Security

The following table summarizes investments by type of security as of June 30, 2016 (amounts shown in thousands):

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Available-for-sale securities:
Corporate debt securities, short-term	$	12,245	$	1	$	(4	)	$	12,242
Corporate debt securities, long-term		2,302		—		(4	)		2,298
Government debt securities, short-term		7,677		—		(11	)		7,666
Government debt securities, long-term		6,027		—		(12	)		6,015
Total	$	28,251	$	1	$	(31	)	$	28,221

The following table summarizes investments by type of security as of September 30, 2015 (amounts shown in thousands):

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Available-for-sale securities:
Corporate debt securities, short-term	$	23,924	$	3	$	(6	)	$	23,921
Corporate debt securities, long-term		—		—		—			—
Total	$	23,924	$	3	$	(6	)	$	23,921

Summary 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 June 30, 2016 and September 30, 2015, respectively (amounts shown in thousands):

	Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
June 30, 2016:
Assets:
Short-term investments:
Corporate debt securities
Industrial	$	3,569	$	—
Financial		5,422		—
Commercial paper
Financial		3,251		—
Government debt securities
U.S. Treasury		7,666		—
Long-term investments:
Corporate debt securities
Industrial		2,298		—
Government debt securities
U.S. Treasury		6,015		—
Total assets at fair value	$	28,221	$	—
Liabilities:
Acquisition-related contingent consideration		—		267
Total liabilities at fair value	$	—	$	267

	Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2015:
Assets:
Short-term investments:
Corporate debt securities
Financial	$	10,308	$	—
Industrial		9,665		—
Utility		1,802		—
Commercial paper
Industrial		1,448		—
Financial		698		—
Total assets at fair value	$	23,921	$	—
Liabilities:
Acquisition-related contingent consideration		—		47
Total liabilities at fair value	$	—	$	47

Contingent Consideration

Summary 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 nine months ended June 30, 2016 (amounts shown in thousands):

Balance at September 30, 2015	$	47
Expenses recorded due to changes in fair value		220
Payments		—
Balance at June 30, 2016	$	267