Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Fixed-maturities available for sale—at fair value (amortized cost of $5,587,261 and $5,367,729)	$ 5,017,711	$ 5,517,078
Trading securities—at fair value (amortized cost of $122,472 and $234,382)	115,665	256,546
Equity securities—at fair value (cost of $162,899 and $176,229)	148,965	184,245
Mortgage loans held for sale—at fair value	3,549	0
Other invested assets—at fair value	5,511	4,165
Short-term investments—at fair value (includes $99,735 and $48,652 of reinvested cash collateral held under securities lending agreements)	402,090	551,508
Total investments	5,693,491	6,513,542
Cash	56,183	151,145
Restricted cash	377	1,475
Accrued investment income	40,093	32,812
Accounts and notes receivable	119,834	124,016
Reinsurance recoverable (includes $18 and $51 for paid losses)	25,633	67,896
Deferred policy acquisition costs	18,460	16,317
Property and equipment, net (Note 2)	70,981	75,086
Goodwill and other acquired intangible assets, net (Note 7)	15,285	19,593
Prepaid federal income taxes (Note 10)	596,368	354,123
Other assets (Note 9)	427,024	483,180
Total assets	7,063,729	7,839,185
Liabilities
Unearned premiums	271,479	329,090
Reserve for losses and LAE (Note 11)	426,843	828,642
Senior notes (Note 12)	1,413,504	1,409,473
Other borrowings (Note 12)	155,822	150,983
Reinsurance funds withheld	152,067	228,078
Net deferred tax liability (Note 10)	391,083	337,509
Other liabilities	333,604	296,614
Total liabilities	3,144,402	3,580,389
Commitments and contingencies (Note 13)
Stockholders’ equity
Common stock ($0.001 par value; 485,000 shares authorized; 2022: 176,509 and 157,056 shares issued and outstanding, respectively; 2021: 194,408 and 175,421 shares issued and outstanding, respectively)	176	194
Treasury stock, at cost (2022: 19,453 shares; 2021: 18,987 shares)	(930,643)	(920,798)
Additional paid-in capital	1,519,641	1,878,372
Retained earnings	3,786,952	3,180,935
Accumulated other comprehensive income (loss) (Note 15)	(456,799)	120,093
Total stockholders’ equity	3,919,327	4,258,796
Total liabilities and stockholders’ equity	$ 7,063,729	$ 7,839,185