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Loans and Allowance - Major Categories of Loans (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, gross	$ 266,106,276	$ 263,857,691	$ 278,230,503
Unearned income on loans	(1,048,808)	(1,070,734)	(1,126,396)
Loans and leases receivable, net of deferred income	265,057,468	262,786,957	277,104,107
Allowance for credit losses	(2,483,865)	(3,150,251)	(3,117,870)
Loans and leases receivable, total	262,573,603	259,636,706	273,986,237
Mortgage Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, gross	105,878,368	116,027,206	120,933,420
Mortgage Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, gross	66,756,432	62,469,425	62,601,469
Mortgage Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, gross	5,210,949	5,518,588	7,073,720
Demand and time
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, gross	4,679,475	4,539,701	3,518,752
Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, gross	$ 83,581,052	$ 75,302,771	$ 84,103,142

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after 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.

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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.

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