Fair Value Measurements (Tables)

3 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Information about Financial Assets Measured at Fair Value on Recurring Basis

The following tables present information about the Company’s financial assets measured at fair value on a recurring basis as of June 30, 2015 and March 31, 2015 based on the three-tier fair value hierarchy (in thousands):

	Fair Value Measurements as of
	June 30, 2015
	Level 1		Level 2		Level 3		Total
Description:
Money market funds	$	36,123	$	—	$	—	$	36,123
Commercial paper		—		10,747		—		10,747
Corporate notes and bonds		—		38,030		—		38,030
U.S. treasury securities		2,297		—		—		2,297
U.S. government agencies		—		73,726		—		73,726
Restricted cash - money market funds		4,623		—		—		4,623
Total	$	43,043	$	122,503	$	—	$	165,546
Included in cash and cash equivalents							$	36,123
Included in short-term investments							$	124,800
Included in restricted cash							$	4,623
	Fair Value Measurements as of
	March 31, 2015
	Level 1		Level 2		Level 3		Total
Description:
Money market funds	$	56,455	$	—	$	—	$	56,455
Certificates of deposit		—		1,800		—		1,800
Commercial paper		—		30,288		—		30,288
Corporate notes and bonds		—		38,715		—		38,715
U.S. treasury securities		500		—		—		500
U.S. government agencies		—		33,199		—		33,199
Restricted cash - money market funds		4,623		—		—		4,623
Total	$	61,578	$	104,002	$	—	$	165,580
Included in cash and cash equivalents							$	65,454
Included in short-term investments							$	95,503
Included in restricted cash							$	4,623

Classification of Available-for-Sale Short-Term Investments by Contractual Maturities

The following table classifies the Company’s available-for-sale short-term investments by contractual maturities as of June 30, 2015 and March 31, 2015 (in thousands):

	June 30,		March 31,
	2015		2015
Due in one year	$	76,465	$	53,287
Due in one to two years		48,335		42,216
Total	$	124,800	$	95,503