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Note 5 - Investments Available for Sale Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Loaned securities | $ 65,444 | $ 27,860
Debt Securities, Available-for-sale, Amortized Cost | 4,369,273 | 4,098,962
Debt Securities, Available-for-sale | 4,527,223 | 4,021,575
Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 4,403,293 |
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 4,561,841 |
Fixed maturities | US government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 176,682 | 85,532
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 182,415 | 84,070
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 5,839 | 46
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 106 | 1,508
Fixed maturities | State and municipal obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 100,070 | 138,022
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 110,981 | 138,313
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 10,911 | 2,191
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 1,900
Fixed maturities | Corporate bonds and notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 2,254,627 | 2,288,720
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 2,362,004 | 2,229,885
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 108,541 | 5,053
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 1,164 | 63,888
Fixed maturities | RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 605,687 | 334,843
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 619,935 | 332,142
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 15,286 | 1,785
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 1,038 | 4,486
Fixed maturities | CMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 542,284 | 546,729
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 563,338 | 539,915
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 21,966 | 544
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 912 | 7,358
Fixed maturities | Other ABS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 718,854 | 712,748
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 717,986 | 704,662
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 2,394 | 814
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 3,262 | 8,900
Fixed maturities | Foreign government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 5,089 |
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 5,182 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 93 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 |
Fixed maturities | Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities | 4,403,293 | 4,106,594
Debt Securities, Available-for-sale, Amortized Cost | 4,369,273 | 4,098,962
Available-for-sale Securities, Debt Securities, Including Loaned Securities | 4,561,841 | 4,028,987
Debt Securities, Available-for-sale | 4,527,223 | 4,021,575
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 165,030 | 10,433
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 6,482 | 88,040
Fixed maturities | Securities Financing Transaction, Cost | Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Loaned securities | 34,020 | 7,632
Fixed maturities | Securities Financing Transaction, Fair Value | Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Loaned securities | $ 34,618 | $ 7,412

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 + Details
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