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Fair Value (Quantitative information about impaired loans) (Details) - Discounted appraisal value [Member] - Level 3 [Member] - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discounted appraisal value at fair value | $ 18,934 | $ 15,956
Loans Receivable, Collateralized By Livestock [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 30.00% | 30.00%
Real Estate [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 20.00% | 20.00%
Real Estate [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 30.00% | 0.00%
Equipment [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 25.00% | 20.00%
Equipment [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 35.00% | 0.00%
Loans Receivable, Collateralized By Accounts Receivable [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate |  | 50.00%
Loans Receivable, Collateralized By Accounts Receivable [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 25.00% |
Loans Receivable, Collateralized By Accounts Receivable [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 50.00% |
Cash crop inventory [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 30.00% | 30.00%
Cash crop inventory [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 40.00% | 0.00%
Loans Receivable, Collateralized By Other Inventory [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 50.00% | 50.00%
Loans Receivable, Collateralized By Other Inventory [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 75.00% | 75.00%
Liquor License [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 75.00% | 75.00%
Furniture and Fixtures [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 35.00% | 35.00%
Furniture and Fixtures [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Inputs, Discount Rate | 45.00% | 45.00%

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- Definition Impaired Financing Receivable, Fair Value Disclosure + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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