Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Revenue:
Product	$ 633,408	$ 272,895	$ 234,268
Service	322,011	180,774	162,379
Total revenue	955,419	453,669	396,647
Cost of revenue:
Product (related party balances of $25,055, $0 and $0, respectively)	238,037	59,037	51,219
Service (related party balances of $5,736, $0 and $0, respectively)	90,412	35,524	33,294
Total cost of revenue	328,449	94,561	84,513
Gross profit	626,970	359,108	312,134
Operating expenses:
Research and development (related party balances of $16,701, $0 and $0, respectively)	208,630	75,242	70,454
Sales and marketing (related party balances of $15,430, $0 and $0, respectively)	293,335	136,446	129,611
General and administrative (related party balances of $16,055, $0 and $0, respectively)	117,714	47,296	30,623
Amortization of acquired intangible assets	32,373	3,351	3,432
Restructuring charges	468	0	0
Total operating expenses	652,520	262,335	234,120
Income (loss) from operations	(25,550)	96,773	78,014
Interest and other income (expense), net:
Interest income	691	445	309
Interest expense	(6,329)	(773)	(768)
Other income (expense), net (related party balances of ($379), $0 and $0, respectively)	(1,251)	(1,480)	301
Total interest and other expense, net	(6,889)	(1,808)	(158)
Income (loss) before income tax expense (benefit)	(32,439)	94,965	77,856
Income tax expense (benefit)	(4,070)	33,773	28,750
Net income (loss)	$ (28,369)	$ 61,192	$ 49,106
Basic net income (loss) per share (in dollars per share)	$ (0.35)	$ 1.49	$ 1.19
Diluted net income (loss) per share (in dollars per share)	$ (0.35)	$ 1.47	$ 1.17
Weighted average common shares outstanding used in computing:
Net income (loss) per share-basic (in shares)	81,927	41,105	41,366
Net income (loss) per share-diluted (in shares)	81,927	41,637	41,955