Revenue from Contracts with Customers - Schedule of Revenues Disaggregated by Major Revenue Categories and by Occurrence (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Total revenues	$ 149,721	$ 141,752	$ 445,091	$ 412,633
Subscription Services
Disaggregation Of Revenue [Line Items]
Total revenues	41,158	37,958	120,581	110,185
Support And Maintenance
Disaggregation Of Revenue [Line Items]
Total revenues	38,246	37,914	115,736	114,537
Managed Services
Disaggregation Of Revenue [Line Items]
Total revenues	28,861	27,395	87,798	76,106
Electronic Data Interchange And Data Services
Disaggregation Of Revenue [Line Items]
Total revenues	26,231	24,976	78,371	72,628
Recurring Revenue
Disaggregation Of Revenue [Line Items]
Total revenues	134,496	128,243	402,486	373,456
Software License and Hardware
Disaggregation Of Revenue [Line Items]
Total revenues	8,920	7,908	24,202	20,662
Other Non-recurring Services
Disaggregation Of Revenue [Line Items]
Total revenues	6,305	5,601	18,403	18,515
Software, Hardware, and Other Non-recurring
Disaggregation Of Revenue [Line Items]
Total revenues	$ 15,225	$ 13,509	$ 42,605	$ 39,177