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Lease Commitments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Lease Commitments        
Amortization of right-of-use asset $ 64   $ 193  
Interest expense 29 $ 0 88 $ 0
Operating lease cost 29   87  
Total lease cost $ 122   $ 368