Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total net revenue	$ 37,892	$ 34,360	$ 76,617	$ 64,166
Revenue recognized	12,200	12,100	29,600	30,500
Transfers to accounts receivable	100	200	2,300	1,700
Capitalized contract cost, net	3,100	3,100	3,100	3,100
Sales commissions and fees	500	700	1,200	1,300
Capitalized contract cost, amortization	300	400	600	700
Products [Member]
Disaggregation of Revenue [Line Items]
Total net revenue	7,299	6,559	16,143	11,798
Support, Maintenance, Subscription Services, And Professional Services [Member]
Disaggregation of Revenue [Line Items]
Total net revenue	$ 30,600	$ 27,800	$ 60,500	$ 52,400