Consolidated Statements Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
REVENUES:
Net premiums written	$ 2,574,824	$ 2,413,254
Change in net unearned premiums	(83,392)	(164,167)
Net premiums earned	2,491,432	2,249,087
Net investment income	223,398	173,512
Net realized and unrealized gains on investments	22,611	369,882
Change in allowance for expected credit losses on investments	399	(3,617)
Net investment gains	23,010	366,265
Revenues from non-insurance businesses	124,200	97,776
Insurance service fees	32,857	27,951
Other income	107	818
Total revenues	2,895,004	2,915,409
OPERATING COSTS AND EXPENSES:
Losses and loss expenses	1,538,755	1,339,252
Other operating costs and expenses	825,575	713,899
Expenses from non-insurance businesses	122,767	94,855
Interest expense	31,836	34,970
Total operating costs and expenses	2,518,933	2,182,976
Income before income taxes	376,071	732,433
Income tax expense	(80,342)	(139,403)
Net income before noncontrolling interests	295,729	593,030
Noncontrolling interests	(1,603)	(2,392)
Net income to common stockholders	$ 294,126	$ 590,638
NET INCOME PER SHARE:
Basic (in dollar per share)	$ 1.07	$ 2.13
Diluted (in dollar per share)	$ 1.06	$ 2.12