Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Total revenues	$ 130,321	$ 132,607	$ 263,521	$ 263,529
Cost of revenue:
Total cost of revenue	61,118	58,755	122,969	117,924
Gross profit	69,203	73,852	140,552	145,605
Operating expenses:
Selling, general and administrative	34,229	40,977	78,865	83,954
Research and development costs, net	18,371	19,527	40,499	39,516
Amortization of acquired intangible assets	1,121	2,012	2,289	4,059
Total operating expenses	53,721	62,516	121,653	127,529
Income from operations	15,482	11,336	18,899	18,076
Interest income	40	12	69	21
Interest expense	(769)	(840)	(1,499)	(1,517)
Other income (expense), net	237	15	611	(7)
Income before provision for income taxes	14,990	10,523	18,080	16,573
Provision for income taxes	1,896	2,493	2,338	4,647
Net income	13,094	8,030	15,742	11,926
Other comprehensive income:
Foreign currency translation, net of tax	(794)	(85)	(1,293)	(99)
Comprehensive income	$ 12,300	$ 7,945	$ 14,449	$ 11,827
Net income per share:
Basic	$ 0.20	$ 0.13	$ 0.25	$ 0.19
Diluted	$ 0.20	$ 0.13	$ 0.24	$ 0.19
Weighted-average shares outstanding:
Basic	64,265	63,513	64,143	63,077
Diluted	64,857	63,530	64,362	63,089
Recurring
Revenues:
Total revenues	$ 116,317	$ 119,441	$ 236,324	$ 238,619
Cost of revenue:
Total cost of revenue	47,172	47,699	95,325	96,157
Software, Hardware, and Other Non-recurring
Revenues:
Total revenues	14,004	13,166	27,197	24,910
Cost of revenue:
Total cost of revenue	7,022	5,947	14,176	11,987
Amortization of Capitalized Software Costs and Acquired Intangible Assets
Cost of revenue:
Total cost of revenue	$ 6,924	$ 5,109	$ 13,468	$ 9,780