Fair Value Measurements (Tables)
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6 Months Ended |
Jun. 30, 2016 |
Fair Value Disclosures [Abstract] |
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Fair value measurements for items measured at fair value |
Fair value measurements for assets measured at fair value included the following as of June 30, 2016 and December 31, 2015: June 30, 2016 | | | | | | | | | | | | | | | | | | (In thousands) | | Total Fair Value | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | U.S. Treasury securities and obligations of U.S. government corporations and agencies | | $ | 61,330 |
| | $ | 14,678 |
| | $ | 46,652 |
| | $ | — |
| Obligations of U.S. states and political subdivisions | | 2,077,452 |
| | — |
| | 2,076,396 |
| | 1,056 |
| Corporate debt securities | | 1,729,965 |
| | — |
| | 1,729,965 |
| | — |
| Asset-backed securities | | 104,407 |
| | — |
| | 104,407 |
| | — |
| Residential mortgage-backed securities | | 238,340 |
| | — |
| | 238,340 |
| | — |
| Commercial mortgage-backed securities | | 284,158 |
| | — |
| | 284,158 |
| | — |
| Collateralized loan obligations | | 60,550 |
| | — |
| | 60,550 |
| | — |
| Total debt securities | | 4,556,202 |
| | 14,678 |
| | 4,540,468 |
| | 1,056 |
| Equity securities (1) | | 9,876 |
| | 2,936 |
| | — |
| | 6,940 |
| Total investment portfolio | | $ | 4,566,078 |
| | $ | 17,614 |
| | $ | 4,540,468 |
| | $ | 7,996 |
| Real estate acquired (2) | | $ | 9,642 |
| | $ | — |
| | $ | — |
| | $ | 9,642 |
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December 31, 2015 | | | | | | | | | | | | | | | | | | (In thousands) | | Total Fair Value | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | U.S. Treasury securities and obligations of U.S. government corporations and agencies | | $ | 160,584 |
| | $ | 46,197 |
| | $ | 114,387 |
| | $ | — |
| Obligations of U.S. states and political subdivisions | | 1,792,527 |
| | — |
| | 1,791,299 |
| | 1,228 |
| Corporate debt securities | | 2,004,763 |
| | — |
| | 2,004,763 |
| | — |
| Asset-backed securities | | 116,617 |
| | — |
| | 116,617 |
| | — |
| Residential mortgage-backed securities | | 257,648 |
| | — |
| | 257,648 |
| | — |
| Commercial mortgage-backed securities | | 233,491 |
| | — |
| | 233,491 |
| | — |
| Collateralized loan obligations | | 60,200 |
| | — |
| | 60,200 |
| | — |
| Debt securities issued by foreign sovereign governments | | 31,731 |
| | 31,731 |
| | — |
| | — |
| Total debt securities | | 4,657,561 |
| | 77,928 |
| | 4,578,405 |
| | 1,228 |
| Equity securities (1) | | 5,645 |
| | 2,790 |
| | — |
| | 2,855 |
| Total investment portfolio | | $ | 4,663,206 |
| | $ | 80,718 |
| | $ | 4,578,405 |
| | $ | 4,083 |
| Real estate acquired (2) | | $ | 12,149 |
| | $ | — |
| | $ | — |
| | $ | 12,149 |
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| | (1) | Certain equity securities in Level 3 are carried at cost, which approximates fair value. |
| | (2) | Real estate acquired through claim settlement, which is held for sale, is reported in Other assets on the consolidated balance sheets. |
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Reconciliation of beginning and ending balance for assets and liabilities measured at fair value with significant unobservable inputs (level 3) |
For assets measured at fair value using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances for the three and six months ended June 30, 2016 and 2015 is shown in the following tables. There were no transfers into or out of Level 3 in those periods and there were no losses included in earnings for those periods attributable to the change in unrealized losses on assets still held at the end of the applicable period. | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2016 | (In thousands) | | Debt Securities | | Equity Securities | | Total Investments | | Real Estate Acquired | Balance at March 31, 2016 | | $ | 1,192 |
| | $ | 3,421 |
| | $ | 4,613 |
| | $ | 12,849 |
| Total realized/unrealized gains (losses): | | |
| | |
| | |
| | |
| Included in other comprehensive income | | — |
| | 3,519 |
| | 3,519 |
| | — |
| Included in earnings and reported as losses incurred, net | | — |
| | — |
| | — |
| | 651 |
| Purchases | | — |
| | — |
| | — |
| | 6,748 |
| Sales | | (136 | ) | | — |
| | (136 | ) | | (10,606 | ) | Balance at June 30, 2016 | | $ | 1,056 |
| | $ | 6,940 |
| | $ | 7,996 |
| | $ | 9,642 |
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| | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2015 | (In thousands) | | Debt Securities | | Equity Securities | | Total Investments | | Real Estate Acquired | Balance at March 31, 2015 | | $ | 1,791 |
| | $ | 321 |
| | $ | 2,112 |
| | $ | 10,897 |
| Total realized/unrealized gains (losses): | | |
| | |
| | |
| | |
| Included in earnings and reported as losses incurred, net | | — |
| | — |
| | — |
| | 31 |
| Purchases | | — |
| | — |
| | — |
| | 5,917 |
| Sales | | (157 | ) | | — |
| | (157 | ) | | (8,850 | ) | Balance at June 30, 2015 | | $ | 1,634 |
| | $ | 321 |
| | $ | 1,955 |
| | $ | 7,995 |
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| | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2016 | (In thousands) | | Debt Securities | | Equity Securities | | Total Investments | | Real Estate Acquired | Balance at December 31, 2015 | | $ | 1,228 |
| | $ | 2,855 |
| | $ | 4,083 |
| | $ | 12,149 |
| Total realized/unrealized gains (losses): | | |
| | |
| | |
| | |
| Included in other comprehensive income | | — |
| | 3,519 |
| | 3,519 |
| | — |
| Included in earnings and reported as losses incurred, net | | — |
| | — |
| | — |
| | 358 |
| Purchases | | — |
| | 3,091 |
| | 3,091 |
| | 19,015 |
| Sales | | (172 | ) | | (2,525 | ) | | (2,697 | ) | | (21,880 | ) | Balance at June 30, 2016 | | $ | 1,056 |
| | $ | 6,940 |
| | $ | 7,996 |
| | $ | 9,642 |
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| | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2015 | (In thousands) | | Debt Securities | | Equity Securities | | Total Investments | | Real Estate Acquired | Balance at December 31, 2014 | | $ | 1,846 |
| | $ | 321 |
| | $ | 2,167 |
| | $ | 12,658 |
| Total realized/unrealized gains (losses): | | |
| | |
| | |
| | |
| Included in earnings and reported as losses incurred, net | | — |
| | — |
| | — |
| | (472 | ) | Purchases | | 7 |
| | — |
| | 7 |
| | 16,714 |
| Sales | | (219 | ) | | — |
| | (219 | ) | | (20,905 | ) | Balance at June 30, 2015 | | $ | 1,634 |
| | $ | 321 |
| | $ | 1,955 |
| | $ | 7,995 |
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Carrying value and fair value of debt |
The following tables present the carrying value and fair value of our financial liabilities disclosed, but not carried, at fair value at June 30, 2016 and December 31, 2015. The fair values of our Convertible Senior Notes and Convertible Junior Subordinated Debentures were based on observable market prices and the fair value of the Federal Home Loan Bank Advance was estimated using discounted cash flows on current incremental borrowing rates for similar borrowing arrangements, and in all cases they are categorized as Level 2. | | | | | | | | | | June 30, 2016 | | | | | (In thousands) | | Carrying Value | | Fair Value | Financial liabilities: | | | | | FHLB Advance due 2023 | | $ | 155,000 |
| | $ | 160,025 |
| Convertible Senior Notes due 2017 | | 144,470 |
| | 150,070 |
| Convertible Senior Notes due 2020 | | 491,854 |
| | 554,670 |
| Convertible Junior Subordinated Debentures due 2063 | | 256,872 |
| | 285,244 |
| Total Debt | | $ | 1,048,196 |
| | $ | 1,150,009 |
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| | | | | | | | | | December 31, 2015 | | | | | (In thousands) | | Carrying Value | | Fair Value | Financial liabilities: | | | | | | | | | | Convertible Senior Notes due 2017 | | $ | 331,546 |
| | $ | 345,616 |
| Convertible Senior Notes due 2020 | | 490,755 |
| | 701,955 |
| Convertible Junior Subordinated Debentures due 2063 | | 389,522 |
| | 455,067 |
| Total Debt | | $ | 1,211,823 |
| | $ | 1,502,638 |
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