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Securities (Details 4) $ in Thousands | Jun. 30, 2018 USD ($) Securities | Dec. 31, 2017 USD ($) Securities
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | $ 129,266 | $ 68,707
Unrealized Losses, Less than 12 months | (2,983) | (514)
Estimated Fair Value, 12 months or longer | 42,713 | 46,147
Unrealized Losses, 12 months or longer | (3,378) | (2,494)
Estimated Fair Value, Total | 171,979 | 114,854
Unrealized Losses, Total | $ (6,361) | $ (3,008)
Number of securities, Unrealized Losses, Less than 12 months | Securities | 105 | 40
Number of securities, Unrealized Losses, 12 months or longer | Securities | 37 | 37
Number of securities, Unrealized Losses, Total | Securities | 142 | 77
U.S. government sponsored entities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | $ 1,995 | $ 0
Unrealized Losses, Less than 12 months | (5) | 0
Estimated Fair Value, 12 months or longer | 3,824 | 3,890
Unrealized Losses, 12 months or longer | (173) | (106)
Estimated Fair Value, Total | 5,819 | 3,890
Unrealized Losses, Total | (178) | (106)
Collateralized mortgage obligations and residential mortgage-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | 97,556 | 66,917
Unrealized Losses, Less than 12 months | (2,303) | (511)
Estimated Fair Value, 12 months or longer | 33,685 | 37,003
Unrealized Losses, 12 months or longer | (1,739) | (945)
Estimated Fair Value, Total | 131,241 | 103,920
Unrealized Losses, Total | (4,042) | (1,456)
Collateralized Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | 0 | 0
Unrealized Losses, Less than 12 months | 0 | 0
Estimated Fair Value, 12 months or longer | 3,483 | 3,439
Unrealized Losses, 12 months or longer | (1,327) | (1,396)
Estimated Fair Value, Total | 3,483 | 3,439
Unrealized Losses, Total | (1,327) | (1,396)
Municipal securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | 29,715 | 1,790
Unrealized Losses, Less than 12 months | (675) | (3)
Estimated Fair Value, 12 months or longer | 1,721 | 1,815
Unrealized Losses, 12 months or longer | (139) | (47)
Estimated Fair Value, Total | 31,436 | 3,605
Unrealized Losses, Total | $ (814) | $ (50)

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