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Revenue Recognition - Narrative (Details) - USD ($)
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]      
Additions, net, during the period $ 439,503,000 $ 345,041,000  
Unbilled revenue 2,200,000 1,400,000  
Capitalized contract acquisition costs 8,500,000 9,600,000 $ 9,400,000
Amortization of deferred contract costs 8,785,000 9,755,000 6,883,000
Deferred contract costs, impairment losses 0 $ 0 $ 0
AMiON      
Disaggregation of Revenue [Line Items]      
Additions, net, during the period $ 2,900,000