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10. Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2019
Related Party Transactions [Abstract]  
Summary of activity for related party loans
   2019  2018
Beginning balance  $3,192    3,679 
New loans   5,716    8,030 
Repayments   (5,436)   (8,517)
Ending balance  $3,472    3,192