Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Investments (Notes 5 and 6)
Fixed-maturities available for sale-at fair value (amortized cost of $5,511,501 and $5,599,111)	$ 5,074,920	$ 5,188,228
Trading securities-at fair value (amortized cost of $89,479 and $110,484)	82,652	106,423
Equity securities-at fair value (cost of $144,579 and $92,124)	138,189	89,057
Residential mortgage loans held for sale-at fair value (Note 7)	519,885	32,755
Other long-term invested assets-at fair value	7,942	8,625
Short-term investments-at fair value (includes $125,723 and $149,364 of reinvested cash collateral held under securities lending agreements)	521,648	660,566
Total investments	6,345,236	6,085,654
Cash	38,823	18,999
Restricted cash	2,649	1,066
Accrued investment income	49,053	45,783
Accounts and notes receivable	128,093	123,857
Reinsurance recoverables (includes $444 and $59 for paid losses)	36,433	25,909
Deferred policy acquisition costs	17,746	18,718
Property and equipment, net	27,637	63,822
Prepaid federal income taxes (Note 10)	921,080	750,320
Other assets	375,931	459,805
Securitized residential mortgage loans held for investment-at fair value	717,227	0
Other VIE assets	4,080	0
Total assets	8,663,988	7,593,933
Liabilities
Reserve for losses and LAE (Note 11)	360,326	370,148
Unearned premiums	188,337	225,396
Senior notes (Note 12)	1,065,337	1,417,781
Secured borrowings (Note 12)	538,294	119,476
Net deferred tax liability (Note 10)	746,685	589,564
Other liabilities	431,556	473,763
Securitized nonrecourse debt-at fair value	703,526	0
Other VIE liabilities	6,069	0
Total liabilities	4,040,130	3,196,128
Commitments and contingencies (Note 13)
Stockholders’ equity
Common stock ($0.001 par value; 485,000 shares authorized; 2024: 168,350 and 147,569 shares issued and outstanding, respectively; 2023: 173,247 and 153,179 shares issued and outstanding, respectively)	168	173
Treasury stock, at cost (2024: 20,782 shares; 2023: 20,068 shares)	(968,246)	(945,870)
Additional paid-in capital	1,246,826	1,430,594
Retained earnings	4,695,348	4,243,759
Accumulated other comprehensive income (loss) (Note 15)	(350,238)	(330,851)
Total stockholders’ equity	4,623,858	4,397,805
Total liabilities and stockholders’ equity	$ 8,663,988	$ 7,593,933