Consolidated Statements of Net Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Total revenues	$ 529,173	$ 531,019	$ 509,624
Cost of revenue:
Total cost of revenue	246,697	241,535	223,134
Gross profit	282,476	289,484	286,490
Operating expenses:
Selling, general and administrative	164,879	193,226	163,623
Research and development costs, net	80,994	81,259	78,341
Amortization of acquired intangible assets	4,344	7,810	10,435
Impairment of assets		3,757
Restructuring costs	640	611	7,078
Total operating expenses	250,857	286,663	259,477
Income from operations	31,619	2,821	27,013
Interest income	216	55	14
Interest expense	(2,814)	(3,323)	(3,156)
Other income (expense), net	267	37	(262)
Income (loss) before provision for (benefit of) income taxes	29,288	(410)	23,609
Provision for (benefit of) income taxes	4,794	(2,830)	5,368
Net income	24,494	2,420	18,241
Other comprehensive income:
Foreign currency translation, net of tax	(831)	(42)	80
Unrealized gain on marketable securities, net of tax			43
Comprehensive income	$ 23,663	$ 2,378	$ 18,364
Net income per share:
Basic	$ 0.38	$ 0.04	$ 0.30
Diluted	$ 0.38	$ 0.04	$ 0.29
Weighted-average shares outstanding:
Basic	64,417	63,435	61,818
Diluted	64,600	63,440	62,010
Recurring
Revenues:
Total revenues	$ 473,921	$ 476,214	$ 448,325
Cost of revenue:
Total cost of revenue	191,496	194,360	179,245
Software, Hardware, and Other Non-recurring
Revenues:
Total revenues	55,252	54,805	61,299
Cost of revenue:
Total cost of revenue	26,711	25,085	26,109
Amortization of Capitalized Software Costs and Acquired Intangible Assets
Cost of revenue:
Total cost of revenue	$ 28,490	$ 22,090	$ 17,780