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Leases (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases    
Operating lease cost $ 1,151 $ 1,154
Operating cash flows from operating leases $ 1,282 $ 1,256
Weighted average remaining lease term Operating leases 8 years 2 months 23 days 9 years 3 months
Weighted average discount rate Operating leases 2.39% 3.45%