Investment and Mortgage-Backed Securities, Available for Sale (Schedule of Temporarily Impaired Securities, Fair Value and Unrealized losses) (Details) - USD ($)	Jun. 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	$ 423,173,540	$ 240,863,386
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	112,442,843	84,912,501
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	535,616,383	325,775,887
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	30,132,070	3,854,991
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	9,240,477	1,800,444
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	39,372,547	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	49,676,794	36,816,929
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	15,621,237	8,826,508
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	65,298,031	45,643,437
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	1,354,067	216,012
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	538,090	39,666
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	1,892,157	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	17,330,725	15,916,497
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	40,780,723	48,791,470
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	58,111,448	64,707,967
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	1,187,781	359,541
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	1,281,482	720,233
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	2,469,263	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	20,699,626
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	20,699,626
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	1,551,755
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	1,551,755
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	47,966,011	28,032,194
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	6,416,145	4,342,641
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	54,382,156	32,374,835
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	8,740,085	413,490
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	1,681,084	185,897
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	10,421,169	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	287,500,384	160,097,766
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	49,624,738	22,951,882
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	337,125,122	183,049,648
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	17,298,382	2,865,948
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	5,739,821	854,648
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 23,038,203	$ 3,720,596