XML 81 R53.htm IDEA: XBRL DOCUMENT v3.21.1
Investment and Mortgage-Backed Securities, Available for Sale (Schedule of AFS Securities, Contractual Maturities) (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract]    
Less Than One Year, Amortized Cost $ 64,354  
One – Five Years, Amortized Cost 7,995,095  
Five – Ten Years, Amortized Cost 77,877,630  
After Ten Years, Amortized Cost 218,345,636  
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale 572,137,595 $ 408,695,280
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis 572,137,595  
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]    
Less Than One Year, Fair Value 64,197  
One – Five Years, Fair Value 8,022,724  
Five – Ten Years, Fair Value 78,435,507  
After Ten Years, Fair Value 225,028,959  
Available-for-sale Securities, Fair Value Disclosure 589,324,401 $ 414,644,840
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value $ 589,324,401