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Allowance For Loan Losses - Balance Of The Allowance Segregated By Segment And Class (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment $ 13 $ 17 $ 14  
Collectively evaluated for impairment 21,123 19,071 19,505  
Total 21,136 19,088 19,519 $ 21,461
Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 13      
Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 18,626 16,399    
Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   17    
Collectively evaluated for impairment 6 14    
Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 384 579    
Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 2,107 2,079    
Commercial        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 13 17 14  
Collectively evaluated for impairment 7,960 6,587 5,646  
Total 7,973 6,604 5,660 6,172
Commercial | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 13      
Commercial | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 7,801 6,514    
Commercial | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   17    
Collectively evaluated for impairment 3 9    
Commercial | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 156 64    
Commercial | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Real estate construction one-to-four family        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 679 643 675  
Total 679 643 675 629
Real estate construction one-to-four family | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Real estate construction one-to-four family | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 672 588    
Real estate construction one-to-four family | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Real estate construction one-to-four family | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 7 55    
Real estate construction one-to-four family | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Real estate construction other        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 1,179 1,017 1,275  
Total 1,179 1,017 1,275 1,566
Real estate construction other | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Real estate construction other | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 1,179 1,017    
Real estate construction other | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Real estate construction other | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Real estate construction other | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Real estate term owner occupied        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 2,625 2,188 2,027  
Total 2,625 2,188 2,027 2,194
Real estate term owner occupied | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Real estate term owner occupied | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 2,573 2,125    
Real estate term owner occupied | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Real estate term owner occupied | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 52 63    
Real estate term owner occupied | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Real estate term non-owner occupied        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 5,133 5,180 5,799  
Total 5,133 5,180 5,799 6,043
Real estate term non-owner occupied | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Real estate term non-owner occupied | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 5,001 4,829    
Real estate term non-owner occupied | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Real estate term non-owner occupied | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 132 351    
Real estate term non-owner occupied | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Real estate term other        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 779 671 716  
Total 779 671 716 725
Real estate term other | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Real estate term other | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 742 629    
Real estate term other | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Real estate term other | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 37 42    
Real estate term other | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Consumer secured by 1st deeds of trust        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 261 270 306  
Total 261 270 306 315
Consumer secured by 1st deeds of trust | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Consumer secured by 1st deeds of trust | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 261 266    
Consumer secured by 1st deeds of trust | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Consumer secured by 1st deeds of trust | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 4    
Consumer secured by 1st deeds of trust | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Consumer other        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 400 436 426  
Total 400 436 426 307
Consumer other | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Consumer other | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 397 431    
Consumer other | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 3 5    
Consumer other | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Consumer other | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0 0 0  
Collectively evaluated for impairment 2,107 2,079 2,635  
Total 2,107 2,079 $ 2,635 $ 3,510
Unallocated | Asset Quality Rating - Doubtful        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment 0      
Unallocated | Asset Quality Rating - Pass        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Unallocated | Asset Quality Rating - Substandard        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Individually evaluated for impairment   0    
Collectively evaluated for impairment 0 0    
Unallocated | Asset Quality Rating - Special Mention        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment 0 0    
Unallocated | Unallocated        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Collectively evaluated for impairment $ 2,107 $ 2,079