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Leases (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows (fixed payments) $ 148 $ 143
Operating cash flows (liability reduction) 118 108
ROU assets obtained in exchange for lease obligations:    
Operating leases $ 0 $ 0