Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Revenue:
Product	$ 735,531	$ 633,408	$ 272,895
Service	426,581	322,011	180,774
Total revenue	1,162,112	955,419	453,669
Cost of revenue:
Product (related party balances of $7,229, $25,055 and $0, respectively)	238,002	238,037	59,037
Service (related party balances of $745, $5,736 and $0, respectively)	108,137	90,412	35,524
Total cost of revenue	346,139	328,449	94,561
Gross profit	815,973	626,970	359,108
Operating expenses:
Research and development (related party balances of $1,624, $16,701 and $0, respectively)	232,701	208,630	75,242
Sales and marketing (related party balances of $2,423, $15,430 and $0, respectively)	328,628	293,335	136,446
General and administrative (related party balances of $4,099, $16,055 and $0, respectively)	118,438	117,714	47,296
Amortization of acquired intangible assets	70,141	32,373	3,351
Restructuring charges	4,001	468	0
Total operating expenses	753,909	652,520	262,335
Income (loss) from operations	62,064	(25,550)	96,773
Interest and other income (expense), net:
Interest income	1,021	691	445
Interest expense	(9,184)	(6,329)	(773)
Other income (expense), net (related party balances of $426, ($379) and $0, respectively)	(1,716)	(1,251)	(1,480)
Total interest and other expense, net	(9,879)	(6,889)	(1,808)
Income (loss) before income tax expense (benefit)	52,185	(32,439)	94,965
Income tax expense (benefit)	18,894	(4,070)	33,773
Net income (loss)	$ 33,291	$ (28,369)	$ 61,192
Basic net income (loss) per share (in dollars per share)	$ 0.36	$ (0.35)	$ 1.49
Diluted net income (loss) per share (in dollars per share)	$ 0.36	$ (0.35)	$ 1.47
Weighted average common shares outstanding used in computing:
Net income (loss) per share-basic (in shares)	92,226	81,927	41,105
Net income (loss) per share-diluted (in shares)	92,920	81,927	41,637