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10. Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2020
Related Party Transactions [Abstract]  
Summary of activity for related party loans
(Dollars in thousands)      
   2020  2019
Beginning balance  $3,472    3,192 
New loans   4,189    5,716 
Repayments   (5,809)   (5,436)
Ending balance  $1,852    3,472