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Leases - Components of Lease Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Leases [Abstract]        
Operating lease expense [1] $ 212 $ 210 $ 423 $ 420
Operating lease income [2] 212 $ 212 424 421
Operating lease, right-of-use asset 3,269   3,269  
Operating lease, liability $ 3,312   $ 3,312  
Weighted-average remaining lease term (in years) 6 years 3 months 10 days   6 years 3 months 10 days  
Weighted-average discount rate 3.14%   3.14%  
Operating cash flows from operating leases     $ 373 $ 385
[1] Includes short-term lease costs. For the three- and six-month periods ended June 30, 2020 and 2019, short-term lease costs were nominal in amount.
[2] Operating lease income includes rental income from owned properties.