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9. Related Party Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Related Party Transactions Details Abstract    
Beginning balance $ 3,679 $ 4,503
New loans 8,030 5,879
Repayments (8,517) (6,703)
Ending balance $ 3,192 $ 3,679