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LEASES - Lease Cost (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases [Abstract]    
Operating lease expense $ 28,924 $ 28,489
Variable lease expense (1) 10,311 16,027
Short-term lease expense 203 370
Less: Sublease income (205) (193)
Total lease costs $ 39,233 $ 44,693