Investment and Mortgage-Backed Securities, Available for Sale (Schedule of Temporarily Impaired Securities, Fair Value and Unrealized losses) (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 339,156,555	$ 240,863,386
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	181,923,114	84,912,501
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	521,079,669	325,775,887
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	33,623,281	3,854,991
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	22,348,925	1,800,444
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	55,972,206	5,655,435
Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	37,822,551	36,816,929
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	23,576,616	8,826,508
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	61,399,167	45,643,437
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	718,181	216,012
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	675,734	39,666
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	1,393,915	255,678
SBA Bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	13,370,130	15,916,497
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	40,092,297	48,791,470
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	53,462,427	64,707,967
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	906,319	359,541
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	2,262,925	720,233
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	3,169,244	1,079,774
Tax Exempt Municipal Bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	33,440,787
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	33,440,787
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	2,914,934
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	2,914,934
Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	40,292,536	28,032,194
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	11,127,542	4,342,641
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	51,420,078	32,374,835
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	10,429,037	413,490
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	3,917,900	185,897
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	14,346,937	599,387
Mortgage-Backed Securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	214,230,551	160,097,766
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	107,126,659	22,951,882
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	321,357,210	183,049,648
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	18,654,810	2,865,948
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	15,492,366	854,648
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 34,147,176	$ 3,720,596