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Loans, Trouble Debt Restructuring (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) Contract | Sep. 30, 2017 USD ($) Contract | Sep. 30, 2018 USD ($) Contract | Sep. 30, 2017 USD ($) Contract | Dec. 31, 2017 USD ($)
Loans [Abstract] |  |  |  |  |
Reserves of allowance for loan losses | $ 263 |  | $ 263 |  | $ 41
Recidivism receivables [Abstract] |  |  |  |  |
Number of contract, subsequently defaults | Contract | 3 | 0 | 3 | 0 |
Total recidivism, Recorded investment | $ 1,426 | $ 0 | $ 1,426 | $ 0 |
Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract | 0 | 0 | 0 | 0 |
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0 | $ 0 |
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0 | $ 0 |
Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract | 3 | 3 | 11 | 10 |
Pre-modification outstanding recorded investment | $ 1,408 | $ 311 | $ 3,692 | $ 7,108 |
Post-modification outstanding recorded investment | $ 1,408 | $ 311 | $ 3,692 | $ 7,108 |
Real Estate Loans [Member] | Home Equity [Member] | Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  |  | 0 |  |
Pre-modification outstanding recorded investment |  |  | $ 0 |  |
Post-modification outstanding recorded investment |  |  | $ 0 |  |
Real Estate Loans [Member] | Home Equity [Member] | Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  |  | 1 |  |
Pre-modification outstanding recorded investment |  |  | $ 1 |  |
Post-modification outstanding recorded investment |  |  | $ 1 |  |
Real Estate Loans [Member] | Mortgages [Member] | Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  |  | 0 |  |
Pre-modification outstanding recorded investment |  |  | $ 0 |  |
Post-modification outstanding recorded investment |  |  | $ 0 |  |
Real Estate Loans [Member] | Mortgages [Member] | Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  |  | 1 |  |
Pre-modification outstanding recorded investment |  |  | $ 7 |  |
Post-modification outstanding recorded investment |  |  | $ 7 |  |
Real Estate Loans [Member] | Commercial [Member] | Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract | 0 |  | 0 | 0 |
Pre-modification outstanding recorded investment | $ 0 |  | $ 0 | $ 0 |
Post-modification outstanding recorded investment | $ 0 |  | $ 0 | $ 0 |
Real Estate Loans [Member] | Commercial [Member] | Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract | 1 |  | 2 | 7 |
Pre-modification outstanding recorded investment | $ 106 |  | $ 683 | $ 6,797 |
Post-modification outstanding recorded investment | $ 106 |  | $ 683 | $ 6,797 |
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |  |
Recidivism receivables [Abstract] |  |  |  |  |
Number of contract, subsequently defaults | Contract | 2 | 0 | 2 | 0 |
Total recidivism, Recorded investment | $ 1,302 | $ 0 | $ 1,302 | $ 0 |
Real Estate Loans [Member] | Agricultural [Member] | Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract | 0 | 0 | 0 | 0 |
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0 | $ 0 |
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0 | $ 0 |
Real Estate Loans [Member] | Agricultural [Member] | Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract | 2 | 2 | 3 | 2 |
Pre-modification outstanding recorded investment | $ 1,302 | $ 150 | $ 2,825 | $ 150 |
Post-modification outstanding recorded investment | $ 1,302 | $ 150 | $ 2,825 | $ 150 |
Other Agricultural Loans [Member] |  |  |  |  |
Recidivism receivables [Abstract] |  |  |  |  |
Number of contract, subsequently defaults | Contract | 1 | 0 | 1 | 0 |
Total recidivism, Recorded investment | $ 124 | $ 0 | $ 124 | $ 0 |
Other Agricultural Loans [Member] | Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  |  | 0 | 0 |
Pre-modification outstanding recorded investment |  |  | $ 0 | $ 0 |
Post-modification outstanding recorded investment |  |  | $ 0 | $ 0 |
Other Agricultural Loans [Member] | Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  |  | 4 | 1 |
Pre-modification outstanding recorded investment |  |  | $ 176 | $ 161 |
Post-modification outstanding recorded investment |  |  | $ 176 | $ 161 |
Other Agricultural Loans [Member] | Commercial [Member] | Interest Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  | 0 |  |  |
Pre-modification outstanding recorded investment |  | $ 0 |  |  |
Post-modification outstanding recorded investment |  | $ 0 |  |  |
Other Agricultural Loans [Member] | Commercial [Member] | Term Modification [Member] |  |  |  |  |
Financing receivable modifications [Abstract] |  |  |  |  |
Number of contracts | Contract |  | 1 |  |  |
Pre-modification outstanding recorded investment |  | $ 161 |  |  |
Post-modification outstanding recorded investment |  | $ 161 |  |  |

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