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Investment Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
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Amortized cost and fair value of debt securities |  |
Amortized Cost | $ 239,741 | $ 198,653
Gross Unrealized Gains | 1,483 | 1,678
Gross Unrealized Losses | 1,737 | 1,333
Fair value, Total | 239,487 | 198,998
Government sponsored enterprises |  |
Amortized cost and fair value of debt securities |  |
Amortized Cost | 76,667 | 57,002
Gross Unrealized Gains | 287 | 240
Gross Unrealized Losses | 110 | 143
Fair value, Total | 76,844 | 57,099
Asset-backed securities |  |
Amortized cost and fair value of debt securities |  |
Amortized Cost | 129,205 | 106,726
Gross Unrealized Gains | 746 | 855
Gross Unrealized Losses | 1,533 | 1,119
Fair value, Total | 128,418 | 106,462
Obligations of states and political subdivisions |  |
Amortized cost and fair value of debt securities |  |
Amortized Cost | 33,869 | 34,925
Gross Unrealized Gains | 450 | 583
Gross Unrealized Losses | 94 | 71
Fair value, Total | $ 34,225 | $ 35,437

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