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CAPITAL MANAGEMENT (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Capital Management Details Abstract        
Equity $ 75,168 $ 69,002 $ 61,794 $ 37,353
Term Facility 6,901 8,667 9,333  
Finance Lease Obligations 1,819 2,349 2,812  
Equipment Loans 928 1,246 2,168  
Total capital $ 84,816 $ 81,264 $ 76,107