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Note 5 - Investments Schedule of Unrealized Losses (Details) $ in Thousands | Jun. 30, 2015 USD ($) security | Dec. 31, 2014 USD ($) security
--- | --- | ---
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 174 | 62
Fair value available-for-sale securities | $ 851,504 | $ 144,626
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 20,898 | $ 2,379
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 18 | 2
Fair value available-for-sale securities | $ 50,215 | $ 4,482
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 894 | $ 154
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 192 | 64
Fair value available-for-sale securities | $ 901,719 | $ 149,108
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 21,792 | $ 2,533
US government and agency securities |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security |  | 0
Fair value available-for-sale securities |  | $ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | $ 0
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security |  | 1
Fair value available-for-sale securities |  | $ 3,455
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | $ 6
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security |  | 1
Fair value available-for-sale securities |  | $ 3,455
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | $ 6
State and municipal obligations |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 1 |
Fair value available-for-sale securities | $ 5,727 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 2 |
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 0 |
Fair value available-for-sale securities | $ 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 0 |
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 1 |
Fair value available-for-sale securities | $ 5,727 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 2 |
Corporate bonds and notes |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 95 | 24
Fair value available-for-sale securities | $ 408,203 | $ 40,917
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 13,528 | $ 410
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 7 | 1
Fair value available-for-sale securities | $ 10,172 | $ 1,027
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 407 | $ 148
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 102 | 25
Fair value available-for-sale securities | $ 418,375 | $ 41,944
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 13,935 | $ 558
RMBS |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 9 |
Fair value available-for-sale securities | $ 116,631 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 2,115 |
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 0 |
Fair value available-for-sale securities | $ 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 0 |
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 9 |
Fair value available-for-sale securities | $ 116,631 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 2,115 |
CMBS |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 30 |
Fair value available-for-sale securities | $ 195,913 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 4,640 |
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 0 |
Fair value available-for-sale securities | $ 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 0 |
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 30 |
Fair value available-for-sale securities | $ 195,913 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 4,640 |
Other ABS |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 28 | 34
Fair value available-for-sale securities | $ 114,059 | $ 97,356
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 273 | $ 1,727
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 10 | 0
Fair value available-for-sale securities | $ 39,860 | $ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 471 | $ 0
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 38 | 34
Fair value available-for-sale securities | $ 153,919 | $ 97,356
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 744 | $ 1,727
Foreign government securities |  |
Continuous Loss Position Less Than Twelve Months |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | security | 11 | 4
Fair value available-for-sale securities | $ 10,971 | $ 6,353
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | $ 340 | $ 242
Continuous Unrealized Loss Position, Twelve Months Or Greater |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | security | 1 | 0
Fair value available-for-sale securities | $ 183 | $ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 16 | $ 0
Continuous Loss Position, Total |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security | 12 | 4
Fair value available-for-sale securities | $ 11,154 | $ 6,353
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 356 | $ 242

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