Loans Receivable, Net (Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in loans receivable) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
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	9,871,838	9,225,574
Financing Receivable, Allowance for Credit Loss	9,871,838	9,225,574
Financing Receivable, Individually Evaluated for Impairment	3,274,102	3,229,883
Financing Receivable, Collectively Evaluated for Impairment	472,203,737	465,290,528
Financing Receivable, before Allowance for Credit Loss	$ 475,477,839	468,520,411
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	1,470,338	1,390,594
Financing Receivable, Allowance for Credit Loss	1,470,338	1,390,594
Financing Receivable, Individually Evaluated for Impairment	1,175,502	1,086,433
Financing Receivable, Collectively Evaluated for Impairment	85,533,243	85,317,871
Financing Receivable, before Allowance for Credit Loss	86,708,745	86,404,304
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	1,328,285	1,210,849
Financing Receivable, Allowance for Credit Loss	1,328,285	1,210,849
Financing Receivable, Individually Evaluated for Impairment	180,171	184,402
Financing Receivable, Collectively Evaluated for Impairment	58,884,226	56,146,611
Financing Receivable, before Allowance for Credit Loss	59,064,397	56,331,013
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	612,718	544,764
Financing Receivable, Allowance for Credit Loss	612,718	544,764
Financing Receivable, Individually Evaluated for Impairment	64,406	64,406
Financing Receivable, Collectively Evaluated for Impairment	24,157,220	22,169,783
Financing Receivable, before Allowance for Credit Loss	24,221,626	22,234,189
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	6,460,497	6,079,367
Financing Receivable, Allowance for Credit Loss	6,460,497	6,079,367
Financing Receivable, Individually Evaluated for Impairment	1,854,023	1,894,642
Financing Receivable, Collectively Evaluated for Impairment	303,629,048	301,656,263
Financing Receivable, before Allowance for Credit Loss	$ 305,483,071	$ 303,550,905