Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value of Assets Measured on Recurring Basis

The following tables provide information by level for financial assets that are measured at fair value on a recurring basis (in thousands):

			Fair Value Measurements at December 31, 2014 using:
	Total carrying value at December 31, 2014		Quoted price in active markets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Cash equivalents:
Money market	$	7,851	$	7,851	$	—	$	—
Available-for-sale marketable securities:
Corporate bonds	28,479		—		28,479		—
Commercial paper	5,996		—		5,996		—
Certificates of deposit	12,749		—		12,749		—
Total cash equivalents and marketable securities measured at fair value	$	55,075	$	7,851	$	47,224	$	—

			Fair Value Measurements at September 30, 2014 using:
	Total carrying value at September 30, 2014		Quoted price in active markets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Cash equivalents:
Money market	$	19,630	$	19,630	$	—	$	—
Available-for-sale marketable securities:
Corporate bonds	26,694		—		26,694		—
Commercial paper	3,997		—		3,997		—
Certificates of deposit	13,748		—		13,748		—
Total cash equivalents and marketable securities measured at fair value	$	64,069	$	19,630	$	44,439	$	—