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Other Assets Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Sep. 26, 2008
Variable Interest Entity [Line Items] |  |  |  |
Income (Loss) from Equity Method Investments | $ 354,000 | $ 790,000 | $ 481,000 |
Investment in limited partnerships | 4,261,000 | 3,963,000 |  |
Sole ownership of common securities issued by Trust II | 315,000 |  |  |
Junior subordinated notes | 10,019,000 | 10,004,000 |  |
Investment in Trust II | 315,000 | 315,000 |  |
Trust II |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Sole ownership of common securities issued by Trust II |  |  |  | $ 315,000
Junior subordinated notes |  |  |  | $ 10,000,000
Fixed rate |  |  |  | 10.50%
Aldine Capital Fund, LP |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investment in limited partnerships | 904,000 | 883,000 |  |
Aldine Capital Fund II, LP |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investment in limited partnerships | $ 3,400,000 | $ 3,100,000 |  |

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