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INVESTMENTS IN DEBT AND EQUITY SECURITIES (Equity instruments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Equity Securities without Readily Determinable Fair Value [Line Items]    
Total Equity Securities $ 14,419 $ 11,530
Equity securities pledged to creditors 12,830 10,238
Frontline    
Equity Securities without Readily Determinable Fair Value [Line Items]    
Total Equity Securities 12,830 10,238
NorAm Drilling    
Equity Securities without Readily Determinable Fair Value [Line Items]    
Total Equity Securities $ 1,589 $ 1,292