Loans Receivable, Net (Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in the allowance for loan losses) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 0		$ 0		$ 0
Balance At Beginning of Period	11,423,760	$ 10,676,271	12,842,896	$ 9,225,574
Provision for Loan Losses	(665,000)	2,200,000	(2,270,000)	3,600,000
Charge Offs	45,962	65,304	110,353	203,345
Recoveries	459,439	34,695	709,694	223,433
Balance At End of Period	11,172,237	12,845,662	11,172,237	12,845,662
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	11,172,237		11,172,237		12,842,896
Financing Receivable, Allowance for Credit Loss	11,172,237		11,172,237		12,842,896
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		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	7,884,687		7,884,687		8,850,260
Financing Receivable, Allowance for Credit Loss	7,884,687		7,884,687		8,850,260
Commercial Business [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,140,341		1,140,341		1,165,033
Financing Receivable, Allowance for Credit Loss	1,140,341		1,140,341		1,165,033
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,114,764		1,114,764		1,298,655
Financing Receivable, Allowance for Credit Loss	1,114,764		1,114,764		1,298,655
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		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,032,445		1,032,445		1,528,948
Financing Receivable, Allowance for Credit Loss	1,032,445		1,032,445		$ 1,528,948
Residential Real Estate 1 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance At Beginning of Period	1,097,992	1,532,804	1,528,948	1,390,594
Provision for Loan Losses	(74,147)	55,487	(529,449)	196,497
Charge Offs	0	0	0	0
Recoveries	8,600	600	32,946	1,800
Balance At End of Period	1,032,445	1,588,891	1,032,445	1,588,891
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance At Beginning of Period	1,165,357	1,317,734	1,298,655	1,210,849
Provision for Loan Losses	(16,176)	(223)	(160,458)	168,447
Charge Offs	45,962	45,851	103,654	148,844
Recoveries	11,545	13,430	80,221	54,638
Balance At End of Period	1,114,764	1,285,090	1,114,764	1,285,090
Commercial Business [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance At Beginning of Period	1,559,281	639,731	1,165,033	544,764
Provision for Loan Losses	(419,263)	442,730	(19,972)	572,745
Charge Offs	0	0	6,699	35,048
Recoveries	323	0	1,979	0
Balance At End of Period	1,140,341	1,082,461	1,140,341	1,082,461
Commercial Real Estate 1 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance At Beginning of Period	7,601,130	7,186,002	8,850,260	6,079,367
Provision for Loan Losses	(155,414)	1,702,006	(1,560,121)	2,662,311
Charge Offs	0	19,453	0	19,453
Recoveries	438,971	20,665	594,548	166,995
Balance At End of Period	$ 7,884,687	$ 8,889,220	$ 7,884,687	$ 8,889,220