PROPERTY AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 38,221	$ 39,393
Less accumulated depreciation and amortization	32,647	32,308
Property and equipment, net of accumulated depreciation and amortization	5,574	7,085
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	25,646	25,262
Data processing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,448	6,537
Office furniture and other equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,127	$ 7,594