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Securities (Unrealized Losses Available-for-Sale) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Fair value |  |
Less than 12 Months | $ 74,446 | $ 74,593
12 Months or Longer | 37,474 | 3,799
Total | 111,920 | 78,392
Unrealized losses |  |
Less than 12 Months | 565 | 1,160
12 Months or Longer | 935 | 92
Total | 1,500 | 1,252
U.S. government agency obligations - government-sponsored enterprises |  |
Fair value |  |
Less than 12 Months |  | 1,991
12 Months or Longer |  | 0
Total |  | 1,991
Unrealized losses |  |
Less than 12 Months |  | 10
12 Months or Longer |  | 0
Total |  | 10
Municipal obligations |  |
Fair value |  |
Less than 12 Months | 6,132 | 7,207
12 Months or Longer | 2,755 | 406
Total | 8,887 | 7,613
Unrealized losses |  |
Less than 12 Months | 43 | 89
12 Months or Longer | 39 | 3
Total | 82 | 92
Asset-backed securities |  |
Fair value |  |
Less than 12 Months |  | 0
12 Months or Longer |  | 1,081
Total |  | 1,081
Unrealized losses |  |
Less than 12 Months |  | 0
12 Months or Longer |  | 35
Total |  | 35
Collateralized mortgage obligations - government issued |  |
Fair value |  |
Less than 12 Months | 7,104 | 10,552
12 Months or Longer | 6,715 | 493
Total | 13,819 | 11,045
Unrealized losses |  |
Less than 12 Months | 40 | 130
12 Months or Longer | 173 | 16
Total | 213 | 146
Collateralized mortgage obligations - government-sponsored enterprises |  |
Fair value |  |
Less than 12 Months | 59,256 | 54,843
12 Months or Longer | 28,004 | 1,819
Total | 87,260 | 56,662
Unrealized losses |  |
Less than 12 Months | 476 | 931
12 Months or Longer | 723 | 38
Total | 1,199 | $ 969
Other securities |  |
Fair value |  |
Less than 12 Months | 1,954 |
12 Months or Longer | 0 |
Total | 1,954 |
Unrealized losses |  |
Less than 12 Months | 6 |
12 Months or Longer | 0 |
Total | $ 6 |

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