Loans and Allowance for Loan Losses - Loans modified as troubled debt restructurings (Details 8) - Loans Receivable	12 Months Ended
Dec. 31, 2015 USD ($) Loan	Dec. 31, 2014 USD ($) Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan	9	5
Troubled debt restructurings, recorded investment \| $	$ 700,800	$ 604,187
Real estate loans \| 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan	1	3
Troubled debt restructurings, recorded investment \| $	$ 98,246	$ 201,879
Real estate loans \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan	2	1
Troubled debt restructurings, recorded investment \| $	$ 524,432	$ 386,355
Real estate loans \| Agricultural real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan
Troubled debt restructurings, recorded investment \| $
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan
Troubled debt restructurings, recorded investment \| $
Agricultural loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan
Troubled debt restructurings, recorded investment \| $
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan	1
Troubled debt restructurings, recorded investment \| $	$ 1,431
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, number of modifications \| Loan	5	1
Troubled debt restructurings, recorded investment \| $	$ 76,691	$ 15,953

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524

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