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AFFILIATIONS, DISCONTINUED OPERATIONS AND RELATED PARTY TRANSACTIONS - Summarized Operating Results (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Loss Before Income Taxes:    
Income Tax Benefits $ 16 $ 16
Loss from Discontinued Operations — Net $ (62) $ (66)
Earnings (Loss) Per Common Share from Discontinued Operations - Net    
Basic and Diluted (in dollars per share) $ 0.00 $ 0.00
Sand Mining    
Loss Before Income Taxes:    
Loss before Income Taxes: $ (21) $ (40)
Fuel Oil    
Loss Before Income Taxes:    
Loss before Income Taxes: $ (57) $ (42)