Revenue from Contracts with Customers - Schedule of Revenues Disaggregated by Major Revenue Categories and by Occurrence (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Total revenues	$ 653,172	$ 596,350	$ 556,821
Subscription Services
Disaggregation Of Revenue [Line Items]
Total revenues	184,047	162,636	148,403
Support And Maintenance
Disaggregation Of Revenue [Line Items]
Total revenues	153,520	155,623	152,956
Managed Services
Disaggregation Of Revenue [Line Items]
Total revenues	129,115	111,377	97,400
Transactional And Data Services
Disaggregation Of Revenue [Line Items]
Total revenues	127,236	110,077	104,060
Recurring Revenue
Disaggregation Of Revenue [Line Items]
Total revenues	593,918	539,713	502,819
Software License and Hardware
Disaggregation Of Revenue [Line Items]
Total revenues	27,860	31,347	28,825
Other Non-recurring Services
Disaggregation Of Revenue [Line Items]
Total revenues	31,394	25,290	25,177
Software, Hardware, and Other Non-recurring
Disaggregation Of Revenue [Line Items]
Total revenues	$ 59,254	$ 56,637	$ 54,002