Fair Value Measurements (Tables)

9 Months Ended

Dec. 31, 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 December 31, 2015 and March 31, 2015 based on the three-tier fair value hierarchy (in thousands):

	Fair Value Measurements as of
	December 31, 2015
	Level 1		Level 2		Level 3		Total
Description:
Money market funds	$	36,117	$	—	$	—	$	36,117
Corporate notes and bonds		—		25,359		—		25,359
U.S. treasury securities		2,289		—		—		2,289
U.S. government agencies		—		97,285		—		97,285
Restricted cash - money market funds		8,023		—		—		8,023
Total	$	46,429	$	122,644	$	—	$	169,073
Included in cash and cash equivalents							$	41,945
Included in short-term investments							$	119,105
Included in restricted cash							$	8,023
	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 December 31, 2015 and March 31, 2015 (in thousands):

	December 31, 2015		March 31, 2015
Due in one year	$	92,793	$	53,287
Due in one to two years		26,312		42,216
Total	$	119,105	$	95,503