Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Total revenue	$ 246,008	$ 268,944	$ 674,916	$ 751,563
Cost of revenue:
Total cost of revenue	69,584	64,509	195,591	205,314
Gross profit	176,424	204,435	479,325	546,249
Operating expenses:
Research and development (related party balances of $0, $0, $2 and $3, respectively)	49,925	44,287	161,347	161,762
Sales and marketing (related party balances of $0, $0, $0 and $2, respectively)	74,024	77,270	224,207	239,897
General and administrative (related party balances of $0, $753, $15 and $1,697, respectively)	22,788	23,033	74,141	82,400
Amortization of acquired intangible assets	16,433	18,221	57,879	54,902
Restructuring charges	13,895	3,363	17,514	3,821
Impairment of intangible assets	0	0	35,871	0
Loss on divestiture of business	0	0	9,177	0
Total operating expenses	177,065	166,174	580,136	542,782
Income (loss) from operations	(641)	38,261	(100,811)	3,467
Interest and other expense, net:
Interest income	1,455	307	3,688	1,196
Interest expense	(7,005)	(2,798)	(19,320)	(7,914)
Other income (expense)	986	(616)	429	(2,847)
Total interest and other expense, net	(4,564)	(3,107)	(15,203)	(9,565)
Income (loss) before income tax benefit	(5,205)	35,154	(116,014)	(6,098)
Income tax benefit	(1,602)	(54,531)	(23,479)	(69,093)
Net income (loss)	$ (3,603)	$ 89,685	$ (92,535)	$ 62,995
Basic net income (loss) per share (in USD per share)	$ (0.05)	$ 1.03	$ (1.17)	$ 0.71
Diluted net income (loss) per share (in USD per share)	$ (0.05)	$ 1.02	$ (1.17)	$ 0.70
Weighted average common shares outstanding used in computing:
Net income (loss) per share - basic (in shares)	77,774	87,210	78,916	88,985
Net income (loss) per share - diluted (in shares)	77,774	87,860	78,916	89,882
Product
Revenue:
Total revenue	$ 134,135	$ 146,569	$ 341,815	$ 398,201
Cost of revenue:
Total cost of revenue	40,517	39,810	107,974	120,643
Service
Revenue:
Total revenue	111,873	122,375	333,101	353,362
Cost of revenue:
Total cost of revenue	$ 29,067	$ 24,699	$ 87,617	$ 84,671