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DEBT (Principal Commitments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Debt [Abstract]    
2019 $ 1,887  
2020 9,335  
2021 1,913  
2022 1,879  
2023 1,846  
Thereafter 83,510  
Net premium and debt issue costs 7,498  
Total $ 107,868 $ 149,187