Common Stock and Stockholders' Equity (Tables)

9 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of Stock Option and RSU Award Activities

The following table summarizes the Company’s stock option and RSU award activities for the nine months ended December 31, 2017 (in thousands, except per share information):

	Options Outstanding							RSUs Outstanding
	Number of Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value		Number of Shares		Weighted- Average Grant Date Fair Value		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding - April 1, 2017	4,607		$	17.49	7.1	$	90,339	1,978		$	29.32	2.8	$	73,309
Stock options granted	475		45.27
RSUs granted								1,001		45.59
Stock options exercised	(1,386	)	14.67			42,151
RSUs vested								(587	)	30.89
Stock options canceled/forfeited	(246	)	26.20
RSUs canceled/forfeited								(354	)	32.02
Outstanding - December 31, 2017	3,450		$	21.83	6.8	$	124,015	2,038		$	36.40	2.7	$	117,718

Schedule of Stock-based Compensation Expense Attributed to Cost of Revenue, Research and Development, Sales and Marketing and General and Administrative Expenses

ost of revenue, research and development, sales and marketing, and general and administrative expenses were as follows (in thousands):

	Three Months Ended December 31,				Nine Months Ended December 31,
	2017		2016		2017		2016
Cost of revenue	$	587	$	475	$	1,716	$	1,369
Research and development	2,959		2,390		9,100		7,453
Sales and marketing	3,933		3,479		12,114		9,650
General and administrative	2,454		1,774		6,848		5,247
Total stock-based compensation expense	$	9,933	$	8,118	$	29,778	$	23,719