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Securities - (Details 4) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) security | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($) security
Held to Maturity: |  |  |
Number of positions, less than 12 months (securities) | security | 57 |  | 106
Number of positions, 12 months or more (securities) | security | 0 |  | 0
Number of positions (securities) | security | 57 |  | 106
Fair value, less than 12 months | $ 56,158 |  | $ 95,277
Fair value, 12 months or more | 0 |  | 0
Fair value | 56,158 |  | $ 95,277
Unrealized losses, less than 12 months | (1,064) | $ (1,965) |
Unrealized losses, 12 months or more | 0 | 0 |
Unrealized losses | $ (1,064) | (1,965) |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 149 |  | 184
Number of positions, 12 months or more (securities) | security | 30 |  | 26
Number of positions (securities) | security | 179 |  | 210
Fair value, less than 12 months | $ 387,021 |  | $ 427,364
Fair value, 12 months or more | 73,580 |  | 67,255
Fair value | 460,601 |  | 494,619
Unrealized losses, less than 12 months | (5,498) |  | (8,564)
Unrealized losses, 12 months or more | (6,732) |  | (7,501)
Unrealized losses | $ (12,230) |  | $ (16,065)
Trust preferred securities |  |  |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 0 |  | 0
Number of positions, 12 months or more (securities) | security | 3 |  | 3
Number of positions (securities) | security | 3 |  | 3
Fair value, less than 12 months | $ 0 |  | $ 0
Fair value, 12 months or more | 17,823 |  | 18,389
Fair value | 17,823 |  | 18,389
Unrealized losses, less than 12 months | 0 |  | 0
Unrealized losses, 12 months or more | (4,823) |  | (5,360)
Unrealized losses | $ (4,823) |  | $ (5,360)
Other debt securities |  |  |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 2 |  | 3
Number of positions, 12 months or more (securities) | security | 2 |  | 2
Number of positions (securities) | security | 4 |  | 5
Fair value, less than 12 months | $ 6,971 |  | $ 7,946
Fair value, 12 months or more | 2,410 |  | 2,475
Fair value | 9,381 |  | 10,421
Unrealized losses, less than 12 months | (131) |  | (208)
Unrealized losses, 12 months or more | (9) |  | (10)
Unrealized losses | $ (140) |  | $ (218)
Obligations of other U.S. Government agencies and corporations |  |  |
Held to Maturity: |  |  |
Number of positions, less than 12 months (securities) | security | 4 |  | 4
Number of positions, 12 months or more (securities) | security | 0 |  | 0
Number of positions (securities) | security | 4 |  | 4
Fair value, less than 12 months | $ 11,965 |  | $ 11,915
Fair value, 12 months or more | 0 |  | 0
Fair value | 11,965 |  | $ 11,915
Unrealized losses, less than 12 months | (137) | (187) |
Unrealized losses, 12 months or more | 0 | 0 |
Unrealized losses | $ (137) | (187) |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 0 |  | 0
Number of positions, 12 months or more (securities) | security | 0 |  | 0
Number of positions (securities) | security | 0 |  | 0
Fair value, less than 12 months | $ 0 |  | $ 0
Fair value, 12 months or more | 0 |  | 0
Fair value | 0 |  | 0
Unrealized losses, less than 12 months | 0 |  | 0
Unrealized losses, 12 months or more | 0 |  | 0
Unrealized losses | $ 0 |  | $ 0
Obligations of states and political subdivisions |  |  |
Held to Maturity: |  |  |
Number of positions, less than 12 months (securities) | security | 53 |  | 102
Number of positions, 12 months or more (securities) | security | 0 |  | 0
Number of positions (securities) | security | 53 |  | 102
Fair value, less than 12 months | $ 44,193 |  | $ 83,362
Fair value, 12 months or more | 0 |  | 0
Fair value | 44,193 |  | $ 83,362
Unrealized losses, less than 12 months | (927) | (1,778) |
Unrealized losses, 12 months or more | 0 | 0 |
Unrealized losses | $ (927) | $ (1,778) |
Government agency mortgage backed securities | Residential mortgage-backed securities |  |  |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 104 |  | 131
Number of positions, 12 months or more (securities) | security | 8 |  | 5
Number of positions (securities) | security | 112 |  | 136
Fair value, less than 12 months | $ 256,655 |  | $ 298,400
Fair value, 12 months or more | 17,487 |  | 11,504
Fair value | 274,142 |  | 309,904
Unrealized losses, less than 12 months | (3,585) |  | (6,042)
Unrealized losses, 12 months or more | (580) |  | (601)
Unrealized losses | $ (4,165) |  | $ (6,643)
Government agency mortgage backed securities | Commercial mortgage-backed securities |  |  |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 6 |  | 9
Number of positions, 12 months or more (securities) | security | 2 |  | 2
Number of positions (securities) | security | 8 |  | 11
Fair value, less than 12 months | $ 15,666 |  | $ 21,933
Fair value, 12 months or more | 1,091 |  | 1,101
Fair value | 16,757 |  | 23,034
Unrealized losses, less than 12 months | (294) |  | (453)
Unrealized losses, 12 months or more | (8) |  | (8)
Unrealized losses | $ (302) |  | $ (461)
Government agency collateralized mortgage obligations | Residential mortgage-backed securities |  |  |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 36 |  | 40
Number of positions, 12 months or more (securities) | security | 15 |  | 14
Number of positions (securities) | security | 51 |  | 54
Fair value, less than 12 months | $ 106,006 |  | $ 97,356
Fair value, 12 months or more | 34,769 |  | 33,786
Fair value | 140,775 |  | 131,142
Unrealized losses, less than 12 months | (1,475) |  | (1,845)
Unrealized losses, 12 months or more | (1,312) |  | (1,522)
Unrealized losses | $ (2,787) |  | $ (3,367)
Government agency collateralized mortgage obligations | Commercial mortgage-backed securities |  |  |
Available for Sale: |  |  |
Number of positions, less than 12 months (securities) | security | 1 |  | 1
Number of positions, 12 months or more (securities) | security | 0 |  | 0
Number of positions (securities) | security | 1 |  | 1
Fair value, less than 12 months | $ 1,723 |  | $ 1,729
Fair value, 12 months or more | 0 |  | 0
Fair value | 1,723 |  | 1,729
Unrealized losses, less than 12 months | (13) |  | (16)
Unrealized losses, 12 months or more | 0 |  | 0
Unrealized losses | $ (13) |  | $ (16)

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