Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Product	$ 149,281	$ 168,873	$ 264,103	$ 333,462
Service	107,582	103,175	218,516	207,538
Total revenue	256,863	272,048	482,619	541,000
Cost of revenue:
Product (related party balances of $0, $2,486, $245 and $7,063, respectively)	45,841	56,647	83,686	116,474
Service (related party balances of $259, $282, $288, and $472, respectively)	28,402	27,863	57,119	55,070
Total cost of revenue	74,243	84,510	140,805	171,544
Gross profit	182,620	187,538	341,814	369,456
Operating expenses:
Research and development (related party balances of $0, $548, $3, and $1,573, respectively)	58,509	61,046	117,475	121,597
Sales and marketing (related party balances of $0, $872, $2 and $2,472, respectively)	77,266	76,706	162,627	158,294
General and administrative (related party balances of $700, $2,039, $944 and $3,543, respectively)	29,495	31,527	59,367	62,454
Amortization of acquired intangible assets	18,298	17,559	36,681	35,131
Restructuring charges	291	(105)	458	1,929
Total operating expenses	183,859	186,733	376,608	379,405
Income (loss) from operations	(1,239)	805	(34,794)	(9,949)
Interest and other expense, net:
Interest income	410	229	890	421
Interest expense	(2,565)	(2,193)	(5,116)	(4,525)
Other expense	(1,168)	(466)	(2,232)	(1,230)
Total interest and other expense, net	(3,323)	(2,430)	(6,458)	(5,334)
Loss before income tax expense	(4,562)	(1,625)	(41,252)	(15,283)
Income tax benefit	(2,094)	(359)	(14,562)	(5,019)
Net loss	$ (2,468)	$ (1,266)	$ (26,690)	$ (10,264)
Basic net loss per share (in USD per share)	$ (0.03)	$ (0.01)	$ (0.30)	$ (0.11)
Diluted net loss per share (in USD per share)	$ (0.03)	$ (0.01)	$ (0.30)	$ (0.11)
Weighted average common shares outstanding used in computing:
Net loss per share - basic (in shares)	88,589	91,919	89,878	92,628
Net loss per share - diluted (in shares)	88,589	91,919	89,878	92,628