Short-term Investments (Tables)

12 Months Ended

Sep. 30, 2015

Investments Debt And Equity Securities [Abstract]

Short-term Investments

At September 30, 2015 and 2014, the Company’s short-term investments were composed of the following (in thousands):

	AS OF SEPTEMBER 30, 2015
	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Short-term investments:
Corporate bonds	$	15,166	$	—	$	(5)	$	15,161
Government bonds		2,948		3		—		2,951
Total	$	18,114	$	3	$	(5)	$	18,112

	AS OF SEPTEMBER 30, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Short-term investment s:
Corporate bonds	$	14,262	$	—	$	(27 )	$	14,235
Government bonds		5,638		—		(12 )		5,626
Total	$	19,900	$	—	$	(39)	$	19,861