| Fair value hierarchy of financial assets and financial liabilities measured on a recurring basis |
At March 31, 2022 and December 31, 2021, the Company classified its financial instruments measured at fair value on a recurring basis in the following valuation hierarchy: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2022 | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Fair Value Based on NAV Practical Expedient | | Total Fair Value | Fixed maturities | | | | | | | | | | | | U.S. treasury bonds | | $ | 65,730 | | | $ | — | | | $ | — | | | $ | — | | | $ | 65,730 | | | U.S. agency bonds – mortgage-backed | | — | | | 83,389 | | | — | | | — | | | 83,389 | | | Collateralized mortgage-backed bonds | | — | | | 7,119 | | | — | | | — | | | 7,119 | | | Non-U.S. government bonds | | — | | | 3,009 | | | — | | | — | | | 3,009 | | | Collateralized loan obligations | | — | | | 165,760 | | | — | | | — | | | 165,760 | | | Corporate bonds | | — | | | 146,223 | | | — | | | — | | | 146,223 | | | | | | | | | | | | | | Equity securities | | 708 | | | — | | | 27,660 | | | 20,564 | | | 48,932 | | Other investments | | — | | | — | | | 2,000 | | | 59,986 | | | 61,986 | | Total | | $ | 66,438 | | | $ | 405,500 | | | $ | 29,660 | | | $ | 80,550 | | | $ | 582,148 | | As a percentage of total assets | | 3.0 | % | | 18.3 | % | | 1.3 | % | | 3.6 | % | | 26.2 | % |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2021 | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Fair Value Based on NAV Practical Expedient | | Total Fair Value | Fixed maturities | | | | | | | | | | | | U.S. treasury bonds | | $ | 59,879 | | | $ | — | | | $ | — | | | $ | — | | | $ | 59,879 | | | U.S. agency bonds – mortgage-backed | | — | | | 98,790 | | | — | | | — | | | 98,790 | | | Collateralized mortgage-backed bonds | | — | | | 15,537 | | | — | | | — | | | 15,537 | | | Non-U.S. government bonds | | — | | | 3,276 | | | — | | | — | | | 3,276 | | | Collateralized loan obligations | | — | | | 179,021 | | | — | | | — | | | 179,021 | | | Corporate bonds | | — | | | 240,642 | | | — | | | — | | | 240,642 | | | | | | | | | | | | | | Equity securities | | 1,174 | | | — | | | 25,094 | | | 17,794 | | | 44,062 | | Other investments | | — | | | — | | | 2,000 | | | 52,687 | | | 54,687 | | Total | | $ | 59,879 | | | $ | 537,266 | | | $ | 27,094 | | | $ | 70,481 | | | $ | 695,894 | | As a percentage of total assets | | 2.6 | % | | 23.1 | % | | 1.2 | % | | 3.0 | % | | 29.9 | % |
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| Reconciliation of other investments measured at fair value on a recurring basis using Level 3 inputs |
The following table shows the reconciliation of the beginning and ending balances for investments measured at fair value on a recurring basis using Level 3 inputs for the three months ended March 31, 2022 and 2021. The Company includes any related interest and dividend income in net investment income and are excluded from the reconciliation in the table below: | | | | | | | | | | | | | | | | | | | | | For the Three Months Ended March 31, | | | | | | 2022 | | 2021 | | | | | | Balance - beginning of period | | $ | 27,094 | | | $ | 26,094 | | | | | | | | | | | | | | | | | | | | | | | | | Purchases | | 2,566 | | | 4,250 | | | | | | | Transfers out of Level 3 | | — | | | (1,000) | | | | | | | Total Level 3 investments - end of period | | $ | 29,660 | | | $ | 29,344 | | | | | |
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| Carrying values and fair values of financial instruments not measured at fair value |
The following table presents the respective carrying value and fair value for the Senior Notes as at March 31, 2022 and December 31, 2021: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2022 | | December 31, 2021 | | | Carrying Value | | Fair Value | | Carrying Value | | Fair Value | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Senior Notes - MHLA – 6.625% | | $ | 110,000 | | | $ | 80,071 | | | $ | 110,000 | | | $ | 94,820 | | Senior Notes - MHNC – 7.75% | | 152,500 | | | 128,039 | | | 152,500 | | | 140,300 | | | Total Senior Notes | | $ | 262,500 | | | $ | 208,110 | | | $ | 262,500 | | | $ | 235,120 | |
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