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Securities (Details 4) $ in Thousands | Dec. 31, 2017 USD ($) Securities | Dec. 31, 2016 USD ($) Securities
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | $ 68,707 | $ 112,980
Unrealized Losses, Less than 12 months | (514) | (2,195)
Estimated Fair Value, 12 months or longer | 46,147 | 4,696
Unrealized Losses, 12 months or longer | (2,494) | (2,670)
Estimated Fair Value, Total | 114,854 | 117,676
Unrealized Losses, Total | $ (3,008) | $ (4,865)
Number of securities, Unrealized Losses, Less than 12 months | Securities | 40 | 97
Number of securities, Unrealized Losses, 12 months or longer | Securities | 37 | 6
Number of securities, Unrealized Losses, Total | Securities | 77 | 103
U.S. government sponsored entities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | $ 0 | $ 16,274
Unrealized Losses, Less than 12 months | 0 | (369)
Estimated Fair Value, 12 months or longer | 3,890 | 0
Unrealized Losses, 12 months or longer | (106) | 0
Estimated Fair Value, Total | 3,890 | 16,274
Unrealized Losses, Total | (106) | (369)
Collateralized mortgage obligations and residential mortgage-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | 66,917 | 75,931
Unrealized Losses, Less than 12 months | (511) | (1,183)
Estimated Fair Value, 12 months or longer | 37,003 | 2,287
Unrealized Losses, 12 months or longer | (945) | (90)
Estimated Fair Value, Total | 103,920 | 78,218
Unrealized Losses, Total | (1,456) | (1,273)
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 | 3,439 | 2,409
Unrealized Losses, 12 months or longer | (1,396) | (2,580)
Estimated Fair Value, Total | 3,439 | 2,409
Unrealized Losses, Total | (1,396) | (2,580)
Municipal securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value, Less than 12 months | 1,790 | 20,775
Unrealized Losses, Less than 12 months | (3) | (643)
Estimated Fair Value, 12 months or longer | 1,815 | 0
Unrealized Losses, 12 months or longer | (47) | 0
Estimated Fair Value, Total | 3,605 | 20,775
Unrealized Losses, Total | $ (50) | $ (643)

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