Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Apr. 01, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 36,014	$ 31,310	$ 104,224	$ 95,305
Revenue recognized	7,600		28,100
Transfers to accounts receivable	400		3,800
Capitalized contract cost, net	2,900		2,900		$ 1,900
Capitalized Contract Cost, Amortization	300		800
Sales Commissions and Fees	1,300		3,100
Products
Disaggregation of Revenue [Line Items]
Net revenue	10,232	$ 8,156	28,081	$ 25,758
Support, Maintenance, Subscription Services, And Professional Services [Member]
Disaggregation of Revenue [Line Items]
Net revenue	$ 25,782		$ 76,143