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Securities (Schedule of Information Regarding Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Total temporarily impaired securities Fair Value | $ 181,692 | $ 75,474
Total temporarily impaired securities Unrealized Losses | 1,371 | 329
Securities in an Unrealized Loss Position for More than 12 Months |  |
Total temporarily impaired securities Fair Value | 31,395 | 37,392
Total temporarily impaired securities Unrealized Losses | 954 | 1,299
Total temporarily impaired securities Fair Value | 213,087 | 112,866
Total temporarily impaired securities Unrealized Losses | 2,325 | 1,628
US Government-sponsored enterprises securities [Member] |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
AFS Fair Value | 5,993 | 5,489
AFS Unrealized Losses | 7 | 11
Securities in an Unrealized Loss Position for More than 12 Months |  |
AFS Fair Value | 2,978 | 2,953
AFS Unrealized Losses | 22 | 47
Total temporarily impaired securities Fair Value | 8,971 | 8,442
Total temporarily impaired securities Unrealized Losses | 29 | 58
Mortgage-backed securities [Member] |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
AFS Fair Value | 150,853 | 69,985
AFS Unrealized Losses | 1,148 | 318
Securities in an Unrealized Loss Position for More than 12 Months |  |
AFS Fair Value | 27,460 | 33,557
AFS Unrealized Losses | 863 | 1,104
Total temporarily impaired securities Fair Value | 178,313 | 103,542
Total temporarily impaired securities Unrealized Losses | 2,011 | $ 1,422
Corporate bonds [Member] |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
AFS Fair Value | 24,006 |
AFS Unrealized Losses | 210 |
Securities in an Unrealized Loss Position for More than 12 Months |  |
AFS Fair Value | 940 | $ 865
AFS Unrealized Losses | 60 | 135
Total temporarily impaired securities Fair Value | 24,946 | 865
Total temporarily impaired securities Unrealized Losses | $ 270 | $ 135
Equities [Member] |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
AFS Fair Value |  |
AFS Unrealized Losses |  |
Securities in an Unrealized Loss Position for More than 12 Months |  |
AFS Fair Value | $ 17 | $ 17
AFS Unrealized Losses | 9 | 13
Total temporarily impaired securities Fair Value | 17 | 17
Total temporarily impaired securities Unrealized Losses | 9 | $ 13
States and local governments [Member] |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
HTM Fair Value | 840 |
HTM Unrealized Losses | $ 6 |
Securities in an Unrealized Loss Position for More than 12 Months |  |
HTM Fair Value |  |
HTM Unrealized Losses |  |
Total temporarily impaired securities Fair Value | $ 840 |
Total temporarily impaired securities Unrealized Losses | $ 6 |

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