Loans Receivable, Net (Past Due Financing Receivables) (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 535,617,892	$ 500,352,711
Accounts Receivable, before Allowance for Credit Loss, Current	531,154,754	497,935,526
Financing Receivable, before Allowance for Credit Loss, Noncurrent	4,463,138	2,417,185
Residential Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	80,071,994	78,907,159
Accounts Receivable, before Allowance for Credit Loss, Current	79,481,839	78,594,373
Financing Receivable, before Allowance for Credit Loss, Noncurrent	590,155	312,786
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	56,553,972	55,335,425
Accounts Receivable, before Allowance for Credit Loss, Current	56,292,624	54,920,447
Financing Receivable, before Allowance for Credit Loss, Noncurrent	261,348	414,978
Commercial Business [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	30,256,812	19,704,862
Accounts Receivable, before Allowance for Credit Loss, Current	30,118,532	19,648,156
Financing Receivable, before Allowance for Credit Loss, Noncurrent	138,280	56,706
Commercial Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	309,876,227	299,299,647
Accounts Receivable, before Allowance for Credit Loss, Current	306,402,872	297,666,932
Financing Receivable, before Allowance for Credit Loss, Noncurrent	3,473,355	1,632,715
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	2,656,134	1,077,508
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	182,207	292,498
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	138,280	49,554
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	2,335,647	735,456
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	1,051,443	530,094
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	438,674	152,634
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	5,150	30,610
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	607,619	346,850
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	755,561	809,583
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	151,481	160,152
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	73,991	91,870
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	0	7,152
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss, Noncurrent	$ 530,089	$ 550,409