Investment and Mortgage-Backed Securities, Available for Sale (Schedule of Held to Maturity Securities, Contractual Maturities) (Details)	Jun. 30, 2022 USD ($)
Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Less Than One Year, Amortized Cost	$ 523,128
One – Five Years, Amortized Cost	6,467,463
Five – Ten Years, Amortized Cost	83,863,485
After Ten Years, Amortized Cost	206,314,864
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	672,095,824
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Less Than One Year, Fair Value	523,657
One – Five Years, Fair Value	6,413,252
Five – Ten Years, Fair Value	81,621,721
After Ten Years, Fair Value	193,872,558
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	$ 634,540,178

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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