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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
COMMITMENTS AND CONTINGENCIES [Abstract]      
Rent expense $ 5,200 $ 6,700 $ 5,600
Future Minimum Lease Payments [Abstract]      
Year ending March 31, 2020 4,530    
2021 4,026    
2022 2,727    
2023 2,025    
2024 and thereafter 293    
Operating lease obligations 13,601    
Legal Proceedings [Abstract]      
Claim settlement received $ 6,300 $ 380