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Fair Value Disclosures - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2015
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Assets: |  |  |  |
Cash and cash equivalents, Carrying Amount | $ 84,098,439 | $ 68,748,308 | $ 58,586,866 | $ 79,964,633
Securities available for sale, Carrying Amount | 115,535,000 | 129,422,000 |  |
Restricted investments, Carrying Amount | 6,080,700 | 5,627,950 |  |
Loans, net, Carrying Amount | 866,286,380 | 808,271,003 |  |
Cash and cash equivalents, Estimated Fair Value | 84,098,000 | 68,748,000 |  |
Securities available for sale, Estimated Fair Value | 115,535,000 | 129,422,000 |  |
Loans, net, Estimated Fair Value | 855,882,000 | 803,057,000 |  |
Liabilities: |  |  |  |
Noninterest-bearing demand deposits, Carrying Amount | 185,385,953 | 153,482,650 |  |
Interest-bearing demand deposits, Carrying Amount | 156,953,397 | 162,702,457 |  |
Money Market and Savings deposits, Carrying Amount | 306,357,000 | 274,605,000 |  |
Time deposits, Carrying Amount | 311,490,253 | 316,275,340 |  |
Securities sold under agreements to repurchase, Carrying Amount | 26,541,772 | 26,621,984 |  |
Federal Home Loan Bank advances and other borrowings, Carrying Amount | 6,000,000 | 18,505,390 |  |
Noninterest-bearing demand deposits, Estimated Fair Value | 185,386,000 | 153,483,000 |  |
Interest-bearing demand deposits, Estimated Fair Value | 156,953,000 | 162,702,000 |  |
Money Market and Savings deposits, Estimated Fair Value | 306,357,000 | 274,605,000 |  |
Time deposits, Estimated Fair Value | 311,755,000 | 316,734,000 |  |
Securities sold under agreements to repurchase, Estimated Fair Value | 26,542,000 | 26,622,000 |  |
Federal Home Loan Bank advances and other borrowings, Estimated Fair Value | $ 6,000,000 | $ 18,505,000 |  |

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- Definition Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Also includes amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts. + References No definition available. + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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