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Investment Securities (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Fair Value |  |  |  |  |
Less than 12 Months | $ 36,982 |  | $ 36,982 |  | $ 257,218
12 months or Longer | 19,624 |  | 19,624 |  | 67,762
Total fair value | 56,606 |  | 56,606 |  | 324,980
Unrealized Losses |  |  |  |  |
Less than 12 Months | (105) |  | (105) |  | (2,060)
12 months or Longer | (237) |  | (237) |  | (1,400)
Total unrealized losses | (342) |  | (342) |  | (3,460)
Gross realized gains and losses |  |  |  |  |
Gross realized gains | 85 | $ 4 | 95 | $ 4 |
Gross realized losses | 0 | 0 | 0 | 0 |
OTTI losses | (294) | 0 | (294) | 0 |
Net realized gains (losses) | (209) | $ 4 | (199) | $ 4 |
Investment securities pledged as collateral | 249,000 |  | 249,000 |  | 233,140
U.S. Treasury and Federal agencies securities |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 5,974 |  | 5,974 |  | 151,581
12 months or Longer | 0 |  | 0 |  | 43,372
Total fair value | 5,974 |  | 5,974 |  | 194,953
Unrealized Losses |  |  |  |  |
Less than 12 Months | (5) |  | (5) |  | (928)
12 months or Longer | 0 |  | 0 |  | (578)
Total unrealized losses | (5) |  | (5) |  | (1,506)
U.S. States and political subdivisions securities |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 7,237 |  | 7,237 |  | 17,040
12 months or Longer | 4,474 |  | 4,474 |  | 3,795
Total fair value | 11,711 |  | 11,711 |  | 20,835
Unrealized Losses |  |  |  |  |
Less than 12 Months | (22) |  | (22) |  | (79)
12 months or Longer | (41) |  | (41) |  | (64)
Total unrealized losses | (63) |  | (63) |  | (143)
Mortgage-backed securities - Federal agencies |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 23,770 |  | 23,770 |  | 78,731
12 months or Longer | 15,147 |  | 15,147 |  | 20,592
Total fair value | 38,917 |  | 38,917 |  | 99,323
Unrealized Losses |  |  |  |  |
Less than 12 Months | (78) |  | (78) |  | (777)
12 months or Longer | (194) |  | (194) |  | (756)
Total unrealized losses | (272) |  | (272) |  | (1,533)
Corporate debt securities |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 0 |  | 0 |  | 9,340
12 months or Longer | 0 |  | 0 |  | 0
Total fair value | 0 |  | 0 |  | 9,340
Unrealized Losses |  |  |  |  |
Less than 12 Months | 0 |  | 0 |  | (57)
12 months or Longer | 0 |  | 0 |  | 0
Total unrealized losses | 0 |  | 0 |  | (57)
Foreign government and other securities |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 0 |  | 0 |  | 99
12 months or Longer | 0 |  | 0 |  | 0
Total fair value | 0 |  | 0 |  | 99
Unrealized Losses |  |  |  |  |
Less than 12 Months | 0 |  | 0 |  | (1)
12 months or Longer | 0 |  | 0 |  | 0
Total unrealized losses | 0 |  | 0 |  | (1)
Total debt securities |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 36,981 |  | 36,981 |  | 256,791
12 months or Longer | 19,621 |  | 19,621 |  | 67,759
Total fair value | 56,602 |  | 56,602 |  | 324,550
Unrealized Losses |  |  |  |  |
Less than 12 Months | (105) |  | (105) |  | (1,842)
12 months or Longer | (235) |  | (235) |  | (1,398)
Total unrealized losses | (340) |  | (340) |  | (3,240)
Marketable equity securities |  |  |  |  |
Fair Value |  |  |  |  |
Less than 12 Months | 1 |  | 1 |  | 427
12 months or Longer | 3 |  | 3 |  | 3
Total fair value | 4 |  | 4 |  | 430
Unrealized Losses |  |  |  |  |
Less than 12 Months | 0 |  | 0 |  | (218)
12 months or Longer | (2) |  | (2) |  | (2)
Total unrealized losses | $ (2) |  | $ (2) |  | $ (220)

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