Investment and Mortgage-Backed Securities, Available for Sale (Schedule of Held to Maturity Securities, Contractual Maturities) (Details)	Sep. 30, 2022 USD ($)
Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Less Than One Year, Amortized Cost	$ 539,253
One – Five Years, Amortized Cost	5,898,094
Five – Ten Years, Amortized Cost	82,128,559
After Ten Years, Amortized Cost	196,116,751
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	646,506,705
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Less Than One Year, Fair Value	537,497
One – Five Years, Fair Value	5,834,644
Five – Ten Years, Fair Value	78,136,356
After Ten Years, Fair Value	179,301,243
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	$ 591,550,461

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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