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Loans and Allowance for Loan Losses (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2016 | Jun. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | $ 150,000 |  | $ 100,000 |  | $ 500,000 | $ (700,000) |  |  |
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans |  |  |  |  | 43,000 | 121,000 |  |  |
Impaired Financing Receivable, Recorded Investment, Total | 6,077,000 |  |  |  | 6,077,000 |  | $ 6,837,000 |  |
Loans Receivable, Gross, Commercial, Agricultural |  |  |  |  |  |  |  | $ 44,000 |
Proceeds from Loan Originations |  |  |  |  | 2,400,000 |  |  |  |
Allowance for loan losses | 5,507,000 | $ 5,652,000 | 5,936,000 | $ 6,018,000 | 5,507,000 | 5,936,000 | 5,922,000 |  | $ 5,320,000
Commercial Portfolio Segment [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loan Restructuring, Trial Modifications, Amount |  | 8,000 |  | 2,700,000 |  |  |  |  |
Residential Portfolio Segment [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loan Restructuring, Trial Modifications, Amount |  | 188,000 |  |  | 56,000 |  |  |  |
Agriculture Portfolio Segment [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans Receivable, Gross, Commercial, Agricultural | 302,000 |  |  |  | 302,000 |  |  |  |
Loan Restructuring, Trial Modifications, Amount |  |  |  |  | 25,000 |  |  |  |
Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | (40,000) |  | 129,000 |  | (4,000) | (166,000) |  |  |
Impaired Financing Receivable, Recorded Investment, Total | 2,517,000 |  |  |  | 2,517,000 |  | 2,429,000 |  |
Allowance for loan losses | 1,736,000 | $ 1,776,000 | 1,668,000 | $ 1,539,000 | 1,736,000 | 1,668,000 | $ 1,740,000 |  | $ 1,832,000
Trouble Debt Restructurings [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Impaired Financing Receivable Loan Balance Charged Off | 215,000 |  |  |  | 215,000 |  |  |  |
Loans Receivable, Gross, Commercial, Real Estate, Total |  |  | 1,600,000 |  |  | 1,600,000 |  |  |
Provision for Loan and Lease Losses | 2,000 |  |  |  | 2,000 |  |  |  |
Allowance for loan losses |  |  | 1,700,000 |  |  | 1,700,000 |  |  |
Construction Loans [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Allowance for loan losses | 915,000 |  | $ 4,300,000 |  | 915,000 | $ 4,300,000 |  |  |
Construction Loans [Member] | Trouble Debt Restructurings [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans and Leases Receivable, Impaired, Commitment to Lend | $ 84,000 |  |  |  | $ 84,000 |  |  |  |

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 3: 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(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
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- Definition Amount before allowance of loans issued to agricultural institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements. + References Reference 1: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5066-111524 + Details
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