Disclosures About Fair Values of Assets and Liabilities - Measured on nonrecurring basis (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Inputs, Level 1 [Member]
Loans Receivable, Fair Value Disclosure	$ 0	$ 0
Fair Value, Inputs, Level 2 [Member]
Loans Receivable, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3
Loans Receivable, Fair Value Disclosure	175,117,724	174,545,610
Fair Value, Measurements, Nonrecurring [Member]
Loans Receivable, Fair Value Disclosure	51,568	744,381
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Loans Receivable, Fair Value Disclosure	0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Loans Receivable, Fair Value Disclosure	0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Loans Receivable, Fair Value Disclosure	$ 51,568	$ 744,381