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Securities Securities (Unrealized Losses Held-to-Maturity) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Fair value |  |
Less than 12 months | $ 22,134 | $ 12,122
12 months or longer | 0 | 1,199
Total | 22,134 | 13,321
Unrealized losses |  |
Less than 12 months | 179 | 89
12 months or longer | 0 | 12
Total | 179 | 101
U.S. Government agency obligations - government-sponsored enterprises |  |
Fair value |  |
Less than 12 months | 1,000 | 0
12 months or longer | 0 | 1,000
Total | 1,000 | 1,000
Unrealized losses |  |
Less than 12 months | 5 | 0
12 months or longer | 0 | 11
Total | 5 | 11
Municipal obligations |  |
Fair value |  |
Less than 12 months | 9,472 | 436
12 months or longer | 0 | 199
Total | 9,472 | 635
Unrealized losses |  |
Less than 12 months | 78 | 4
12 months or longer | 0 | 1
Total | 78 | 5
Collateralized mortgage obligations - government issued |  |
Fair value |  |
Less than 12 months | 6,980 | 6,518
12 months or longer | 0 | 0
Total | 6,980 | 6,518
Unrealized losses |  |
Less than 12 months | 38 | 41
12 months or longer | 0 | 0
Total | 38 | 41
Collateralized mortgage obligations - government-sponsored enterprises |  |
Fair value |  |
Less than 12 months | 4,682 | 5,168
12 months or longer | 0 | 0
Total | 4,682 | 5,168
Unrealized losses |  |
Less than 12 months | 58 | 44
12 months or longer | 0 | 0
Total | $ 58 | $ 44

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