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PROPERTY AND EQUIPMENT, NET (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 456,888 $ 440,133  
Less: Accumulated depreciation and amortization (254,659) (235,491)  
Property and equipment, net 202,229 204,642  
Depreciation and amortization expense related to property and equipment 69,500 65,000 $ 58,800
Reduction to gross cost and accumulated depreciation for zero net book value assets 55,000 100,300  
Furniture and equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 117,250 117,430  
Computer equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 104,296 97,571  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 235,342 $ 225,132