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Fair Value Measurements (Details 2) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Investments in securities that are classified as level 3 |  |
Available-for-sale Securities | $ 429,125 | $ 363,644
Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) | Weighted Average [Member] |  |
Investments in securities that are classified as level 3 |  |
Cumulative Prepayment | 2.50% | 2.50%
Cumulative Default | 12.50% | 12.80%
Loss Given Default | 94.30% | 94.20%
Cure Given Default | 60.90% | 60.90%
Pooled trust preferred securities | Significant Unobservable Inputs (Level 3) |  |
Investments in securities that are classified as level 3 |  |
Available-for-sale Securities | $ 1,624 | $ 1,584
Pooled trust preferred securities | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) | Minimum [Member] |  |
Investments in securities that are classified as level 3 |  |
Cumulative Prepayment | 0.00% | 0.00%
Cumulative Default | 5.00% | 5.00%
Loss Given Default | 85.00% | 85.00%
Cure Given Default | 0.00% | 0.00%
Pooled trust preferred securities | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) | Maximum [Member] |  |
Investments in securities that are classified as level 3 |  |
Cumulative Prepayment | 61.00% | 62.00%
Cumulative Default | 100.00% | 100.00%
Loss Given Default | 100.00% | 100.00%
Cure Given Default | 75.00% | 75.00%
Collateral dependent impaired loans | Significant Unobservable Inputs (Level 3) |  |
Investments in securities that are classified as level 3 |  |
Fair Value | $ 33,974 | $ 33,974
Other real estate owned and other foreclosed assets | Significant Unobservable Inputs (Level 3) |  |
Investments in securities that are classified as level 3 |  |
Fair Value | $ 2,898 | $ 4,173

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