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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Statement of Financial Position [Abstract] |  |
Total fixed-maturities available for sale | $ 5,535,532 | $ 5,367,729
Trading securities amortized cost | 146,446 | 234,382
Equity securities, fair value cost | 162,320 | 176,229
Reinvested cash collateral held under securities lending agreements | 85,777 | 48,652
Reinsurance recoverables, paid losses | $ 12 | $ 51
Common stock, par or stated value per share | $ 0.001 | $ 0.001
Common stock, shares authorized | 485,000 | 485,000
Common stock, shares, issued | 176,497 | 194,408
Common stock, shares, outstanding | 157,058 | 175,421
Treasury stock, shares | 19,440 | 18,987

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