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Property and Equipment - Property and Equipment, Net (Detail) - USD ($)	Mar. 31, 2025	Mar. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 333,542,000	$ 308,886,000
Less: accumulated depreciation and amortization	(241,490,000)	(222,994,000)
Property and equipment, net	92,052,000	85,892,000
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	234,459,000	213,145,000
Office Equipment And Computers [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	65,429,000	66,608,000
Land, Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,047,000	11,123,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 22,607,000	$ 18,010,000

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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