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LEASE LIABILITIES - Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Operating lease obligations    
2019 $ 56  
2020 226  
2021 230  
2022 232  
2023 237  
Thereafter 158  
Total 1,139  
Finance lease obligations    
2019 579  
2020 2,318  
2021 2,362  
2022 2,058  
2023 105  
Total 7,422  
Lease obligations    
2019 635  
2020 2,544  
2021 2,592  
2022 2,290  
2023 342  
Thereafter 158  
Total 8,561  
Less: Imputed interest (1,051)  
Total $ 7,510 $ 6,429