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Mortgage Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Mortgage Operations [Abstract]    
Real estate mortgage loans serviced $ 208,169 $ 206,208
Mortgage servicing rights [Roll Forward]    
Beginning balance 1,628 1,481
Additions 641 575
Reductions (462) (428)
Ending balance 1,807 1,628
Valuation allowance [Roll Forward]    
Beginning balance (386) 0
Additions 0 (386)
Reductions 110 0
Ending balance (276) (386)
Mortgage servicing rights, net of valuation allowance [Roll Forward]    
Beginning balance 1,242 1,481
Additions 641 189
Reductions (352) (428)
Ending balance 1,531 1,242
Fair value of mortgage servicing rights assets 1,531 1,242
Contractually specified servicing fees $ 530 $ 528