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Note 6 - Investments Total Debt and Equity Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | $ 1,893,356 |  | $ 528,660 |
Fair value |  | 1,940,891 |  | 680,258 |
Gross unrealized gains |  | 6,297 |  | 77,231 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 34,300 |  | 2,533 |
Equity securities available for sale |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis |  | 75,538 |  | 76,900 |
Equity securities available for sale—at fair value |  | 75,430 |  | 143,368 |
Amortized Cost |  | 1,968,894 |  | 605,560 |
Equity securities |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Gross unrealized gains | [1] | 0 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | [1] | 108 |  |  |
Equity securities available for sale |  |  |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis |  | 75,538 | [1] | 76,900 | [2]
Equity securities available for sale—at fair value |  | 75,430 | [1] | 143,368 | [2]
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax | [2] |  |  | 66,468 |
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax | [2] |  |  | 0 |
Debt Securities |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 1,893,356 |  | 528,660 |
Fair value |  | 1,865,461 |  | 536,890 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 10,763 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 2,533 |
Gross unrealized gains |  | 6,297 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 34,192 |  |  |
Foreign government securities |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 25,663 |  | 19,301 |
Fair value |  | 24,307 |  | 19,366 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 307 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 242 |
Gross unrealized gains |  | 27 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 1,383 |  |  |
Asset-backed Securities [Member] |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 359,452 |  | 109,420 |
Fair value |  | 355,494 |  | 107,701 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 8 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 1,727 |
Gross unrealized gains |  | 16 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 3,974 |  |  |
CMBS |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 415,780 |  | 57,358 |
Fair value |  | 406,910 |  | 58,234 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 876 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 0 |
Gross unrealized gains |  | 69 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 8,939 |  |  |
RMBS |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 226,744 |  | 41,467 |
Fair value |  | 224,905 |  | 42,520 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 1,053 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 0 |
Gross unrealized gains |  | 625 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 2,464 |  |  |
Corporate bonds and notes |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 815,024 |  | 277,678 |
Fair value |  | 802,193 |  | 284,408 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 7,288 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 558 |
Gross unrealized gains |  | 4,460 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 17,291 |  |  |
US States and Political Subdivisions Debt Securities [Member] |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 36,920 |  | 17,727 |
Fair value |  | 37,900 |  | 18,910 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 1,183 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 0 |
Gross unrealized gains |  | 1,100 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | 120 |  |  |
US government and agency securities |  |  |  |  |
Fixed maturities available for sale securities |  |  |  |  |
Amortized cost |  | 13,773 |  | 5,709 |
Fair value |  | 13,752 |  | 5,751 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 48 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | $ 6 |
Gross unrealized gains |  | 0 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  | $ 21 |  |  |
[1] | Comprising primarily a multi-sector exchange-traded fund.
[2] | Comprising primarily broadly diversified domestic equity mutual funds.

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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