Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue:
Total revenue	$ 216,421	$ 223,797	$ 402,445	$ 428,908
Cost of revenue:
Total cost of revenue	59,132	63,980	113,875	126,007
Gross profit	157,289	159,817	288,570	302,901
Operating expenses:
Research and development	50,058	55,959	93,785	111,422
Sales and marketing	73,067	72,051	146,592	150,183
General and administrative	25,177	25,294	47,388	51,353
Amortization of acquired intangible assets	16,132	17,981	32,275	41,446
Restructuring charges	150	2,472	273	3,619
Impairment of intangible assets	0	0	0	35,871
Loss on divestiture of business	0	9,177	0	9,177
Total operating expenses	164,584	182,934	320,313	403,071
Loss from operations	(7,295)	(23,117)	(31,743)	(100,170)
Interest and other expense, net:
Interest income	1,214	1,293	2,872	2,233
Interest expense	(5,173)	(6,427)	(11,538)	(12,315)
Other income (expense), net	343	(812)	651	(557)
Total interest and other expense, net	(3,616)	(5,946)	(8,015)	(10,639)
Loss before income tax expense (benefit)	(10,911)	(29,063)	(39,758)	(110,809)
Income tax expense (benefit)	6,561	(2,635)	7,057	(21,877)
Net loss	$ (17,472)	$ (26,428)	$ (46,815)	$ (88,932)
Basic net loss per share (in dollars per share)	$ (0.23)	$ (0.34)	$ (0.61)	$ (1.12)
Diluted net loss per share (in dollars per share)	$ (0.23)	$ (0.34)	$ (0.61)	$ (1.12)
Weighted average common shares outstanding used in computing:
Net loss per share - basic (in shares)	75,687	78,631	76,490	79,490
Net loss per share - diluted (in shares)	75,687	78,631	76,490	79,490
Product
Revenue:
Total revenue	$ 102,775	$ 110,753	$ 178,494	$ 207,680
Cost of revenue:
Total cost of revenue	29,368	34,492	56,303	67,457
Service
Revenue:
Total revenue	113,646	113,044	223,951	221,228
Cost of revenue:
Total cost of revenue	$ 29,764	$ 29,488	$ 57,572	$ 58,550