Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Revenue:
Total revenue	$ 228,739	$ 260,024	$ 617,893	$ 662,469
Cost of revenue:
Total cost of revenue	55,275	65,585	167,155	179,460
Gross profit	173,464	194,439	450,738	483,009
Operating expenses:
Research and development	43,769	48,606	135,605	142,391
Sales and marketing	60,934	67,653	180,668	214,245
General and administrative	21,718	25,048	67,444	72,436
Amortization of acquired intangible assets	15,273	16,120	45,897	48,395
Restructuring charges	0	193	62	466
Total operating expenses	141,694	157,620	429,676	477,933
Income from operations	31,770	36,819	21,062	5,076
Interest and other expense, net:
Interest income	73	826	510	3,699
Interest expense	(2,708)	(4,629)	(8,497)	(16,167)
Other income (expense), net	(948)	(112)	(3,770)	538
Total interest and other expense, net	(3,583)	(3,915)	(11,757)	(11,930)
Income (loss) before income tax expense (benefit)	28,187	32,904	9,305	(6,854)
Income tax expense (benefit)	(834)	(3,821)	1,390	3,236
Net income (loss)	$ 29,021	$ 36,725	$ 7,915	$ (10,090)
Basic net income (loss) per share (in dollars per share)	$ 0.39	$ 0.49	$ 0.11	$ (0.13)
Diluted net income (loss) per share (in dollars per share)	$ 0.39	$ 0.49	$ 0.11	$ (0.13)
Weighted average common shares outstanding used in computing:
Net income (loss) per share - basic (in shares)	73,492	74,367	72,953	75,780
Net income (loss) per share - diluted (in shares)	73,878	74,700	73,618	75,780
Product
Revenue:
Total revenue	$ 114,965	$ 143,309	$ 278,637	$ 321,803
Cost of revenue:
Total cost of revenue	24,263	34,197	72,392	90,500
Service
Revenue:
Total revenue	113,774	116,715	339,256	340,666
Cost of revenue:
Total cost of revenue	$ 31,012	$ 31,388	$ 94,763	$ 88,960