Consolidated Statements Of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Net premiums earned	$ 4,274,378	$ 3,952,482	$ 3,741,948
Net investment income	234,630	168,356	129,727
Net realized investment gains (losses)	101,014	(488,080)	111,658
Other	19,609	10,308	10,024
Total revenues	4,629,631	3,643,066	3,993,357
Expenses:
Losses and loss adjustment expenses	3,517,853	3,362,219	2,760,155
Policy acquisition costs	708,525	654,612	633,385
Other operating expenses	279,656	279,718	283,397
Interest	24,169	17,232	17,113
Total expenses	4,530,203	4,313,781	3,694,050
Income (loss) before income taxes	99,428	(670,715)	299,307
Income tax expense (benefit)	3,092	(158,043)	51,370
Net income (loss)	$ 96,336	$ (512,672)	$ 247,937
Net income (loss) per share:
Basic (in dollars per share)	$ 1.74	$ (9.26)	$ 4.48
Diluted (in dollars per share)	$ 1.74	$ (9.26)	$ 4.48