Fair Value Measurements (Tables)

6 Months Ended

Sep. 30, 2016

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 September 30, 2016 and March 31, 2016 based on the three-tier fair value hierarchy (in thousands):

	Fair Value Measurements as of September 30, 2016
	Level 1		Level 2		Level 3		Total
Description:
Money market funds	$	36,179	$	—	$	—	$	36,179
Certificates of deposit	—		11,208		—		11,208
Commercial paper	—		34,274		—		$	34,274
Corporate notes and bonds	—		5,104		—		5,104
U.S. treasury securities	2,300		—		—		$	2,300
U.S. government agencies	—		73,039		—		73,039
Restricted cash - money market funds	8,115		—		—		$	8,115
Total	$	46,594	$	123,625	$	—	$	170,219
Included in cash and cash equivalents							$	58,725
Included in short-term investments							$	103,379
Included in restricted cash							$	8,115
	Fair Value Measurements as of March 31, 2016
	Level 1		Level 2		Level 3		Total
Description:
Money market funds	$	36,118	$	—	$	—	$	36,118
Corporate notes and bonds	—		15,933		—		15,933
U.S. treasury securities	2,297		—		—		2,297
U.S. government agencies	—		107,184		—		107,184
Restricted cash - money market funds	8,115		—		—		8,115
Total	$	46,530	$	123,117	$	—	$	169,647
Included in cash and cash equivalents							$	36,118
Included in short-term investments							$	125,414
Included in restricted cash							$	8,115

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 September 30, 2016 and March 31, 2016 (in thousands):

	September 30, 2016		March 31, 2016
Due within one year	$	94,883	$	103,822
Due within one to two years	8,496		21,592
Total	$	103,379	$	125,414