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Leases (Details 3) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Finance leases        
Amortization of equipment assets $ 22 $ 19 $ 83 $ 56
Interest on lease liabilities 2 8 11 26
Total expenses $ 24 $ 27 $ 94 $ 82