Consolidated Statements Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
REVENUES:
Net premiums written	$ 2,851,291	$ 2,574,824
Change in net unearned premiums	(86,944)	(83,392)
Net premiums earned	2,764,347	2,491,432
Net investment income	319,839	223,398
Net realized and unrealized gains on investments	11,503	22,611
Change in allowance for expected credit losses on investments	14,277	399
Net investment gains	25,780	23,010
Revenues from non-insurance businesses	120,992	124,200
Insurance service fees	25,319	32,857
Other income	496	107
Total revenues	3,256,773	2,895,004
OPERATING COSTS AND EXPENSES:
Losses and loss expenses	1,663,778	1,538,755
Other operating costs and expenses	868,589	825,575
Expenses from non-insurance businesses	118,607	122,767
Interest expense	31,728	31,836
Total operating costs and expenses	2,682,702	2,518,933
Income before income taxes	574,071	376,071
Income tax expense	(132,036)	(80,342)
Net income before noncontrolling interests	442,035	295,729
Noncontrolling interests	436	(1,603)
Net income to common stockholders	$ 442,471	$ 294,126
NET INCOME PER SHARE:
Basic (in dollar per share)	$ 1.65	$ 1.07
Diluted (in dollar per share)	$ 1.64	$ 1.06