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Securities (Unrealized Losses Held-to-Maturity) (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Fair Value |  |
Less than 12 months | $ 4,659 | $ 22,134
12 months or longer | 5,991 | 0
Total | 10,650 | 22,134
Unrealized Losses |  |
Less than 12 months | 24 | 179
12 months or longer | 46 | 0
Total | 70 | 179
U.S. Government agency obligations - government-sponsored enterprises |  |
Fair Value |  |
Less than 12 months | 1,000 | 1,000
12 months or longer | 0 | 0
Total | 1,000 | 1,000
Unrealized Losses |  |
Less than 12 months | 5 | 5
12 months or longer | 0 | 0
Total | 5 | 5
Municipal obligations |  |
Fair Value |  |
Less than 12 months | 853 | 9,472
12 months or longer | 260 | 0
Total | 1,113 | 9,472
Unrealized Losses |  |
Less than 12 months | 11 | 78
12 months or longer | 3 | 0
Total | 14 | 78
Collateralized mortgage obligations - government issued |  |
Fair Value |  |
Less than 12 months | 2,806 | 6,980
12 months or longer | 3,804 | 0
Total | 6,610 | 6,980
Unrealized Losses |  |
Less than 12 months | 8 | 38
12 months or longer | 25 | 0
Total | 33 | 38
Collateralized mortgage obligations - government-sponsored enterprises |  |
Fair Value |  |
Less than 12 months | 0 | 4,682
12 months or longer | 1,927 | 0
Total | 1,927 | 4,682
Unrealized Losses |  |
Less than 12 months | 0 | 58
12 months or longer | 18 | 0
Total | $ 18 | $ 58

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