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Loans Receivable, Net (Impaired Financing Receivables) (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Financing Receivable, Impaired [Line Items]      
Impaired financing receivable, recorded investment $ 2,589,088   $ 2,219,330
Impaired Financing Receivable, Unpaid Principal Balance 3,637,808   3,268,049
Impaired Financing Receivable, Average Recorded Investment 2,608,748 $ 3,306,272  
Impaired Financing Receivable, Interest Income, Accrual Method 1,856 16,755  
Residential Real Estate 1 [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 1,260,731   1,284,303
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 1,260,731   1,284,303
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment 1,272,179 1,185,056  
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 0 1,195  
Consumer [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 158,165   161,869
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 166,465   170,169
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment 159,600 182,282  
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 0 0  
Commercial Business [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 53,046   53,047
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 948,046   948,046
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment 53,046 64,406  
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 0 0  
Commercial Real Estate 1 [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 1,117,146   720,111
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 1,262,566   865,531
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment 1,123,923 1,874,528  
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 1,856 $ 15,560  
Fair Value, Measurements, Nonrecurring | Impaired Loans [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired financing receivable, related allowance $ 0   $ 0