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Securities (Summary of Book Values and Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Securities available for sale: |  |
Amortized Cost | $ 166,778 | $ 158,708
Fair Value | 165,614 | 158,018
Unrealized Gain | 413 | 830
Unrealized (Losses) | (1,577) | (1,520)
Securities held to maturity: |  |
Amortized Cost | 154,610 | 178,687
Fair Value | 157,146 | 182,411
Unrealized Gain | 3,284 | 3,832
Unrealized (Losses) | (748) | (108)
US Government-sponsored enterprises securities [Member] |  |
Securities available for sale: |  |
Amortized Cost | 19,000 | 27,546
Fair Value | 18,972 | 27,521
Unrealized Gain | 1 | 33
Unrealized (Losses) | (29) | (58)
Mortgage-backed securities [Member] |  |
Securities available for sale: |  |
Amortized Cost | 122,474 | 130,073
Fair Value | 121,553 | 129,510
Unrealized Gain | 348 | 751
Unrealized (Losses) | (1,269) | (1,314)
Securities held to maturity: |  |
Amortized Cost | 102,509 | 124,924
Fair Value | $ 101,767 | 124,861
Unrealized Gain |  | 45
Unrealized (Losses) | $ (742) | (108)
Corporate bonds [Member] |  |
Securities available for sale: |  |
Amortized Cost | 25,216 | 1,000
Fair Value | $ 24,946 | $ 865
Unrealized Gain |  |
Unrealized (Losses) | $ (270) | $ (135)
Equities [Member] |  |
Securities available for sale: |  |
Amortized Cost | 88 | 89
Fair Value | 143 | 122
Unrealized Gain | 64 | 46
Unrealized (Losses) | (9) | (13)
States and local governments [Member] |  |
Securities held to maturity: |  |
Amortized Cost | 52,101 | 53,763
Fair Value | 55,379 | 57,550
Unrealized Gain | 3,284 | $ 3,787
Unrealized (Losses) | $ 6 |

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