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Leases - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases [Abstract]        
Operating lease, cost $ 253 $ 245 $ 809 $ 740
Operating lease, weighted average remaining lease term 1 year 10 months 24 days   1 year 10 months 24 days  
Operating lease, weighted average discount rate, percent 4.50%   4.50%