Revenue from Contracts with Customers - Schedule of Revenues Disaggregated by Major Revenue Categories and by Occurrence (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Total revenues	$ 153,302	$ 146,084
Subscription Services
Disaggregation Of Revenue [Line Items]
Total revenues	42,759	38,284
Support And Maintenance
Disaggregation Of Revenue [Line Items]
Total revenues	39,138	38,486
Managed Services
Disaggregation Of Revenue [Line Items]
Total revenues	30,645	27,908
Transactional And Data Services
Disaggregation Of Revenue [Line Items]
Total revenues	27,217	27,703
Recurring Revenue
Disaggregation Of Revenue [Line Items]
Total revenues	139,759	132,381
Software License and Hardware
Disaggregation Of Revenue [Line Items]
Total revenues	6,199	7,214
Other Non-recurring Services
Disaggregation Of Revenue [Line Items]
Total revenues	7,344	6,489
Software, Hardware, and Other Non-recurring
Disaggregation Of Revenue [Line Items]
Total revenues	$ 13,543	$ 13,703