Fair Value Disclosures - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Assets:
Cash and cash equivalents, Carrying Amount	$ 82,835,426	$ 68,748,308	$ 71,737,117	$ 79,964,633
Securities available for sale, Carrying Amount	132,762,000	129,422,000
Restricted investments, Carrying Amount	6,080,700	5,627,950
Loans, net, Carrying Amount	859,922,516	808,271,003
Cash and cash equivalents, Estimated Fair Value	82,835,000	68,748,000
Securities available for sale, Estimated Fair Value	132,762,000	129,422,000
Loans, net, Estimated Fair Value	851,841,000	803,057,000
Liabilities:
Noninterest-bearing demand deposits, Carrying Amount	183,324,236	153,482,650
Interest-bearing demand deposits, Carrying Amount	156,149,846	162,702,457
Money Market and Savings deposits, Carrying Amount	324,014,000	274,605,000
Time deposits, Carrying Amount	318,146,778	316,275,340
Securities sold under agreements to repurchase, Carrying Amount	22,945,984	26,621,984
Federal Home Loan Bank advances and other borrowings, Carrying Amount	0	18,505,390
Noninterest-bearing demand deposits, Estimated Fair Value	183,324,000	153,483,000
Interest-bearing demand deposits, Estimated Fair Value	156,150,000	162,702,000
Money Market and Savings deposits, Estimated Fair Value	324,014,000	274,605,000
Time deposits, Estimated Fair Value	318,211,000	316,734,000
Securities sold under agreements to repurchase, Estimated Fair Value	22,946,000	26,622,000
Federal Home Loan Bank advances and other borrowings, Estimated Fair Value	$ 0	$ 18,505,000