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Capitalized Software Costs - Capitalized Software Development Costs (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Mar. 31, 2021
Research And Development [Abstract]    
Gross carrying amount $ 103,411 $ 96,908
Accumulated amortization (61,692) (55,434)
Net capitalized software costs $ 41,719 $ 41,474