Loans Receivable, Net (Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in loans receivable) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 0	$ 0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	11,172,237	12,842,896
Financing Receivable, Allowance for Credit Loss	11,172,237	12,842,896
Financing Receivable, Individually Evaluated for Impairment	2,483,766	2,219,330
Financing Receivable, Collectively Evaluated for Impairment	528,143,422	498,133,381
Financing Receivable, before Allowance for Credit Loss	$ 530,627,188	500,352,711
Loans and Leases Receivable, Valuation Period for New Appraisal	24 months
Residential Real Estate 1 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,032,445	1,528,948
Financing Receivable, Allowance for Credit Loss	1,032,445	1,528,948
Financing Receivable, Individually Evaluated for Impairment	1,210,901	1,284,303
Financing Receivable, Collectively Evaluated for Impairment	76,206,017	77,622,856
Financing Receivable, before Allowance for Credit Loss	77,416,918	78,907,159
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,114,764	1,298,655
Financing Receivable, Allowance for Credit Loss	1,114,764	1,298,655
Financing Receivable, Individually Evaluated for Impairment	151,915	161,869
Financing Receivable, Collectively Evaluated for Impairment	55,442,842	55,173,556
Financing Receivable, before Allowance for Credit Loss	55,594,757	55,335,425
Commercial Business [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,140,341	1,165,033
Financing Receivable, Allowance for Credit Loss	1,140,341	1,165,033
Financing Receivable, Individually Evaluated for Impairment	35,446	53,047
Financing Receivable, Collectively Evaluated for Impairment	28,025,409	19,651,815
Financing Receivable, before Allowance for Credit Loss	28,060,855	19,704,862
Commercial Real Estate 1 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	7,884,687	8,850,260
Financing Receivable, Allowance for Credit Loss	7,884,687	8,850,260
Financing Receivable, Individually Evaluated for Impairment	1,085,504	720,111
Financing Receivable, Collectively Evaluated for Impairment	336,349,870	298,579,536
Financing Receivable, before Allowance for Credit Loss	$ 337,435,374	$ 299,299,647