Loans Receivable, Net (Schedule of non-accrual loans by category) (Details) - USD ($)		6 Months Ended
		Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual		$ 3,058,191	$ 3,125,472
FInancing Receivable, Recorded Investment, Nonaccrual Status, Percentage	[1]	0.70%	0.70%
Financing Receivable Recorded Investment in Non-accrual Status, Increase (Decrease)		$ (67,281)
Financing Receivable Recorded Investment in Non-accrual Status, Percent, Increase (Decrease)		(2.20%)
Residential Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual		$ 1,361,321	$ 1,682,240
FInancing Receivable, Recorded Investment, Nonaccrual Status, Percentage	[1]	0.30%	0.40%
Financing Receivable Recorded Investment in Non-accrual Status, Increase (Decrease)		$ (320,919)
Financing Receivable Recorded Investment in Non-accrual Status, Percent, Increase (Decrease)		(19.10%)
Commercial Business [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual		$ 89,250	$ 100,408
FInancing Receivable, Recorded Investment, Nonaccrual Status, Percentage	[1]	0.00%	0.00%
Financing Receivable Recorded Investment in Non-accrual Status, Increase (Decrease)		$ (11,158)
Financing Receivable Recorded Investment in Non-accrual Status, Percent, Increase (Decrease)		(11.10%)
Commercial Real Estate 1 [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual		$ 1,307,600	$ 939,946
FInancing Receivable, Recorded Investment, Nonaccrual Status, Percentage	[1]	0.30%	0.20%
Financing Receivable Recorded Investment in Non-accrual Status, Increase (Decrease)		$ 367,654
Financing Receivable Recorded Investment in Non-accrual Status, Percent, Increase (Decrease)		39.10%
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual		$ 300,020	$ 402,878
FInancing Receivable, Recorded Investment, Nonaccrual Status, Percentage	[1]	0.10%	0.10%
Financing Receivable Recorded Investment in Non-accrual Status, Increase (Decrease)		$ (102,858)
Financing Receivable Recorded Investment in Non-accrual Status, Percent, Increase (Decrease)		(25.50%)

[1] PERCENT OF TOTAL LOANS HELD FOR INVESTMENT, NET OF DEFERRED FEES AND LOANS IN PROCESS.