Quarterly report pursuant to Section 13 or 15(d)

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES - Balance Sheets of VIEs (Details)

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VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES - Balance Sheets of VIEs (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Variable Interest Entity [Line Items]    
Total assets $ 2,135,782 $ 1,945,261
Total liabilities 1,155,278 1,369,260
VIE, primary beneficiary | Bristow Aviation Holdings Limited    
Variable Interest Entity [Line Items]    
Total assets 1,114,656 1,030,096
Total liabilities $ 749,440 $ 3,792,617