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LEASES (Future Minimum Lease Obligations for Office Space) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Leases [Line Items]    
Total operating lease liabilities $ 19,047 $ 20,915
Office Space And Lightering Workboat Dock Space [Member]    
Leases [Line Items]    
2022 136  
2023 229  
2024 973  
2025 998  
2026 1,024  
Thereafter 6,908  
Total lease payments 10,268  
less imputed interest (2,352)  
Total operating lease liabilities $ 7,916