Composition of Certain Financial Statement Captions - Summary of Equipment and Improvements (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Property Plant And Equipment [Line Items]
Equipment and improvements, gross	$ 70,556	$ 78,100
Accumulated depreciation and amortization	(63,326)	(68,980)
Equipment and improvements, net	7,230	9,120
Computer Equipment
Property Plant And Equipment [Line Items]
Equipment and improvements, gross	36,384	36,293
Internal-Use Software
Property Plant And Equipment [Line Items]
Equipment and improvements, gross	19,950	19,001
Leasehold Improvements
Property Plant And Equipment [Line Items]
Equipment and improvements, gross	8,490	13,227
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Equipment and improvements, gross	$ 5,732	$ 9,579

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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