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9. Related Party Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Related Party Transactions Details    
Beginning balance $ 4,503 $ 5,674
New loans 5,879 6,048
Repayments (6,703) (7,219)
Ending balance $ 3,679 $ 4,503