Investment and Mortgage-Backed Securities, Available for Sale (Schedule of Available for Sale Securities) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale	$ 646,506,705	$ 675,913,305
Available-for-sale Securities, Gross Unrealized Gains	1,015,962	12,591,188
Available-for-sale Securities, Gross Unrealized Losses	55,972,206	5,655,435
Available-for-sale Securities, Fair Value Disclosure	591,550,461	682,849,058
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale	44,440,177	44,757,755
Available-for-sale Securities, Gross Unrealized Gains	186,711	5,226,600
Available-for-sale Securities, Gross Unrealized Losses	2,914,934	0
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Fair Value Disclosure		682,849,058
Investments [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Realized Gains		317,722
Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale	64,581,912	71,949,517
Available-for-sale Securities, Gross Unrealized Losses	1,393,915	255,678
Available-for-sale Securities, Gross Realized Gains	33,352
SBA Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale	109,893,553	139,854,620
Available-for-sale Securities, Gross Unrealized Gains	732,050	1,018,231
Available-for-sale Securities, Gross Unrealized Losses	3,169,244	1,079,774
Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale	361,824,048	353,517,112
Available-for-sale Securities, Gross Unrealized Gains	63,849	5,294,398
Available-for-sale Securities, Gross Unrealized Losses	34,147,176	3,720,596
Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost of Investment And Mortgage-Backed Securities Available For Sale	65,767,015	65,834,301
Available-for-sale Securities, Gross Unrealized Gains	0	734,237
Available-for-sale Securities, Gross Unrealized Losses	14,346,937	599,387
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Fair Value Disclosure	41,711,954	49,984,355
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Fair Value Disclosure	63,221,349	72,011,561
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | SBA Bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Fair Value Disclosure	107,456,359	139,793,077
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Fair Value Disclosure	327,740,721	355,090,914
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Fair Value Disclosure	$ 51,420,078	$ 65,969,151