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VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES - Balance Sheets of VIEs (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Mar. 31, 2020
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Cash and cash equivalents | $ 259,922 | $ 196,662
Restricted cash | 3,493 | 2,459
Inventories | 110,086 | 82,419
Prepaid expenses and other current assets | 30,366 | 29,527
Total current assets | 661,088 | 524,151
Investment in unconsolidated affiliates | 89,175 | 110,058
Property and equipment, net | 1,060,083 | 876,754
Right-of-use asset | 297,072 | 305,962
Other assets | 144,373 | 128,336
Total assets | 2,251,791 | 1,945,261
Accounts payable | 61,983 | 52,110
Accrued interest | 943 | 832
Short-term borrowings and current maturities of long-term debt | 63,541 | 45,739
Total current liabilities | 358,226 | 297,978
Long-term debt, less current maturities | 582,264 | 515,385
Accrued pension liabilities | 13,145 | 17,855
Other liabilities and deferred credits | 6,051 | 4,490
Long-term operating lease liabilities | 214,125 | 224,595
VIE, primary beneficiary | Bristow Aviation Holdings Limited |  |
Variable Interest Entity [Line Items] |  |
Cash and cash equivalents | 107,640 | 110,385
Restricted cash | 2,720 | 1,686
Accounts receivable | 557,828 | 297,962
Inventories | 58,602 | 55,166
Prepaid expenses and other current assets | 23,979 | 27,851
Total current assets | 750,769 | 493,050
Investment in unconsolidated affiliates | 597 | 575
Property and equipment, net | 280,395 | 285,142
Right-of-use asset | 167,920 | 54,333
Other assets | 212,704 | 196,996
Total assets | 1,412,385 | 1,030,096
Accounts payable | 510,521 | 497,867
Accrued liabilities | 91,102 | 91,220
Accrued interest | 2,775,938 | 2,697,878
Short-term borrowings and current maturities of long-term debt | 7,904 | 7,904
Total current liabilities | 3,385,465 | 3,294,869
Long-term debt, less current maturities | 442,544 | 441,665
Accrued pension liabilities | 13,145 | 17,855
Other liabilities and deferred credits | 11 | 0
Long-term operating lease liabilities | 35,414 | 38,228
Total Liabilities | $ 3,876,579 | $ 3,792,617

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