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Carrying Amounts and Fair Value of Financial Instruments (Significant unobservable inputs used in the fair value measurements) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Investment Securities, Available For Sale $ 682,849,058 $ 589,324,401    
Other Real Estate Owned ("OREO") $ 129,700 $ 498,610 $ 677,740 $ 722,442
Impaired Loans | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Fair Value Measurements, Valuation Processes, Description Appraised Value      
Significant Unobservable Inputs Discounts to appraised values or cash flows for estimated holding and/or selling costs or age of appraisal      
Foreclosed Assets | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Fair Value Measurements, Valuation Processes, Description Appraised Value/Comparable Sales      
Significant Unobservable Inputs Discounts to appraised values for estimated holding or selling costs      
Minimum | Impaired Loans | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Significant Unobservable Inputs, Percentage Range 7.00% 0.00%    
Minimum | Foreclosed Assets | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Significant Unobservable Inputs, Percentage Range 16.00% 13.00%    
Maximum | Impaired Loans | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Significant Unobservable Inputs, Percentage Range 97.00% 98.00%    
Maximum | Foreclosed Assets | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Significant Unobservable Inputs, Percentage Range 100.00% 100.00%    
Fair Value, Inputs, Level 3 | Foreclosed Assets | Fair Value, Nonrecurring [Member]        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Other Real Estate Owned ("OREO") $ 129,700 $ 498,610