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Lease Commitments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Lease Commitments        
Amortization of right-of-use asset $ 68 $ 64 $ 203 $ 193
Interest expense 28 29 85 88
Operating lease cost 29 29 87 87
Total lease cost $ 125 $ 122 $ 375 $ 368