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Securities (Details 2) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost | $ 3,540 |
Less Than 12 Months |  |
Fair Value | 380,739 | $ 266,768
Unrealized Losses | (8,521) | (2,112)
More Than 12 Months |  |
Fair Value | 207,026 | 222,763
Unrealized Losses | (11,247) | (7,423)
Total |  |
Fair Value | 587,765 | 489,531
Unrealized Losses | (19,768) | (9,535)
US Government Agencies Debt Securities [Member] |  |
Less Than 12 Months |  |
Fair Value | 6,781 | 9,321
Unrealized Losses | (149) | (86)
More Than 12 Months |  |
Fair Value | 5,233 | 3,538
Unrealized Losses | (323) | (232)
Total |  |
Fair Value | 12,014 | 12,859
Unrealized Losses | (472) | (318)
Mortgage Backed Securities - Residential |  |
Less Than 12 Months |  |
Fair Value | 108,401 | 79,918
Unrealized Losses | (2,903) | (425)
More Than 12 Months |  |
Fair Value | 50,247 | 53,815
Unrealized Losses | (2,488) | (1,387)
Total |  |
Fair Value | 158,648 | 133,733
Unrealized Losses | (5,391) | (1,812)
Collateralized Mortgage Obligations |  |
Less Than 12 Months |  |
Fair Value | 199,232 | 150,182
Unrealized Losses | (4,596) | (1,418)
More Than 12 Months |  |
Fair Value | 132,467 | 146,750
Unrealized Losses | (7,660) | (5,287)
Total |  |
Fair Value | 331,699 | 296,932
Unrealized Losses | (12,256) | (6,705)
State and Municipal Obligations |  |
Less Than 12 Months |  |
Fair Value | 66,325 | 27,347
Unrealized Losses | (873) | (183)
More Than 12 Months |  |
Fair Value | 19,079 | 18,660
Unrealized Losses | (776) | (517)
Total |  |
Fair Value | 85,404 | 46,007
Unrealized Losses | $ (1,649) | $ (700)

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