| Fair value hierarchy of financial assets and financial liabilities measured on a recurring basis |
At September 30, 2013 and December 31, 2012, we classified our financial instruments measured at fair value on a recurring basis in the following valuation hierarchy:
5. Fair Value of Financial Instruments (continued)
| | | | | | | | | | | | | | | | | | September 30, 2013 | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total Fair Value | Fixed maturities | | | | | | | | | U.S. treasury bonds | | $ | 17,374 |
| | $ | — |
| | $ | — |
| | $ | 17,374 |
| U.S. agency bonds – mortgage-backed | | — |
| | 1,130,713 |
| | — |
| | 1,130,713 |
| U.S. agency bonds – other | | — |
| | 8,298 |
| | — |
| | 8,298 |
| Non-U.S. government bonds | | — |
| | 67,282 |
| | — |
| | 67,282 |
| Other mortgage-backed bonds | | — |
| | 22,662 |
| | — |
| | 22,662 |
| Corporate bonds | | — |
| | 1,381,646 |
| | — |
| | 1,381,646 |
| Municipal bonds | | — |
| | 46,330 |
| | — |
| | 46,330 |
| Other investments | | — |
| | — |
| | 5,006 |
| | 5,006 |
| Total | | $ | 17,374 |
| | $ | 2,656,931 |
| | $ | 5,006 |
| | $ | 2,679,311 |
| As a percentage of total assets | | 0.4 | % | | 59.7 | % | | 0.1 | % | | 60.2 | % |
| | | | | | | | | | | | | | | | | | December 31, 2012 | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total Fair Value | Fixed maturities | | | | | | | | | U.S. treasury bonds | | $ | 43,931 |
| | $ | — |
| | $ | — |
| | $ | 43,931 |
| U.S. agency bonds – mortgage-backed | | — |
| | 992,174 |
| | — |
| | 992,174 |
| U.S. agency bonds – other | | — |
| | 13,089 |
| | — |
| | 13,089 |
| Non-U.S. government bonds | | — |
| | 57,433 |
| | — |
| | 57,433 |
| Other mortgage-backed bonds | | — |
| | 24,068 |
| | — |
| | 24,068 |
| Corporate bonds | | — |
| | 1,354,154 |
| | — |
| | 1,354,154 |
| Municipal bonds | | — |
| | 133,848 |
| | — |
| | 133,848 |
| Other investments | | — |
| | — |
| | 2,901 |
| | 2,901 |
| Total | | $ | 43,931 |
| | $ | 2,574,766 |
| | $ | 2,901 |
| | $ | 2,621,598 |
| As a percentage of total assets | | 1.1 | % | | 62.2 | % | | 0.1 | % | | 63.4 | % |
|
| Changes in Level 3 for financial instruments measured at fair value on a recurring basis |
The following table presents changes in Level 3 for our financial instruments measured at fair value on a recurring basis for the three and nine months ended September 30, 2013 and 2012: | | | | | | | | | | | | For the Three Months Ended | Other investments: | | September 30, 2013 |
| September 30, 2012 | Balance at beginning of period | | $ | 4,438 |
| | $ | 2,697 |
| Net realized gains – included in net income | | 29 |
| | 36 |
| Net realized losses – included in net income | | — |
| | — |
| Change in net unrealized gains – included in other comprehensive income | | 155 |
| | 7 |
| Change in net unrealized losses – included in other comprehensive income | | — |
| | — |
| Purchases | | 475 |
| | 200 |
| Sales and redemptions | | (91 | ) | | (114 | ) | Transfers into Level 3 | | — |
| | — |
| Transfers out of Level 3 | | — |
| | — |
| Balance at end of period | | $ | 5,006 |
| | $ | 2,826 |
| Level 3 gains (losses) included in net income attributable to the change in unrealized gains (losses) relating to assets held at the reporting date | | $ | — |
| | $ | — |
|
| | | | | | | | | | | | For the Nine Months Ended | Other investments: | | September 30, 2013 | | September 30, 2012 | Balance at beginning of period | | $ | 2,901 |
| | $ | 2,192 |
| Net realized gains – included in net income | | 147 |
| | 55 |
| Net realized losses – included in net income | | — |
| | — |
| Change in net unrealized gains – included in other comprehensive income | | 204 |
| | 59 |
| Change in net unrealized losses – included in other comprehensive income | | — |
| | — |
| Purchases | | 2,013 |
| | 794 |
| Sales and redemptions | | (259 | ) | | (274 | ) | Transfers into Level 3 | | — |
| | — |
| Transfers out of Level 3 | | — |
| | — |
| Balance at end of period | | $ | 5,006 |
| | $ | 2,826 |
| Level 3 gains (losses) included in net income attributable to the change in unrealized gains (losses) relating to assets held at the reporting date | | $ | — |
| | $ | — |
|
|
| Carrying values and fair values of the Senior Notes and Junior Subordinated debt |
The following table presents the carrying values and fair values of the Senior Notes and Junior Subordinated debt as of September 30, 2013 and December 31, 2012: | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2013 | | December 31, 2012 | | | Interest Rate | | Carrying Value | | Fair Value | | Carrying Value | | Fair Value | 2011 Senior Notes | | 8.25 | % | | $ | 107,500 |
| | $ | 110,252 |
| | $ | 107,500 |
| | $ | 112,832 |
| 2012 Senior Notes | | 8.00 | % | | 100,000 |
| | 101,760 |
| | 100,000 |
| | 105,600 |
| Junior Subordinated Debt | | 14.00 | % | | 126,364 |
| | 156,506 |
| | 126,317 |
| | 166,919 |
|
|