Intangible Assets - Intangible Assets, Other than Capitalized Software Development Costs (Details) - Intangible Assets Other Than Capitalized Software - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 88,450	$ 88,450
Accumulated amortization	(66,633)	(64,147)
Net intangible assets	21,817	24,303
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	39,200	39,200
Accumulated amortization	(30,516)	(29,824)
Net intangible assets	8,684	9,376
Trade Names
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	250	250
Accumulated amortization	(129)	(116)
Net intangible assets	121	134
Computer Software, Intangible Asset
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	49,000	49,000
Accumulated amortization	(35,988)	(34,207)
Net intangible assets	$ 13,012	$ 14,793