CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Revenues	$ 64,812	$ 54,013	$ 127,283	$ 100,770
Cost of revenue	24,466	24,009	48,120	48,070
Gross profit	40,346	30,004	79,163	52,700
Operating expenses:
Research and development	16,940	15,599	33,910	30,439
Sales and marketing	35,940	25,981	69,263	50,072
General and administrative	25,176	23,724	43,300	47,311
Gains, losses and other items, net	489	2,833	491	2,830
Total operating expenses	78,545	68,137	146,964	130,652
Loss from operations	(38,199)	(38,133)	(67,801)	(77,952)
Other income (expense):
Total other income (expense)	(281)	263	75	(317)
Loss from continuing operations before income taxes	(38,480)	(37,870)	(67,726)	(78,269)
Income taxes (benefit)	2,700	(11,869)	1,272	(25,189)
Net loss from continuing operations	(41,180)	(26,001)	(68,998)	(53,080)
Earnings (loss) from discontinued operations, net of tax	61,803	22,665	86,606	48,444
Net earnings (loss)	$ 20,623	$ (3,336)	$ 17,608	$ (4,636)
Basic loss per share:
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ (0.53)	$ (0.33)	$ (0.89)	$ (0.67)
Basic earnings (loss) per share from discontinued operations (in dollars per share)	0.80	0.29	1.12	0.61
Basic earnings (loss) per share (in USD per share)	0.27	(0.04)	0.23	(0.06)
Diluted earnings (loss) per share:
Diluted earnings (loss) per share from continuing operations (in dollars per share)	(0.53)	(0.33)	(0.89)	(0.67)
Diluted earnings (loss) per share from discontinued operations (in dollars per share)	0.80	0.29	1.12	0.61
Diluted earnings (loss), net per share (in USD per share)	$ 0.27	$ (0.04)	$ 0.23	$ (0.06)