Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ (505,902)	$ 217,464
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	64,647	56,864
Net realized investment losses (gains)	581,237	(56,953)
Increase in premiums receivable	(25,202)	(58,529)
Decrease (increase) in reinsurance recoverables	19,691	(1,437)
Changes in current and deferred income taxes	(147,595)	(22,454)
Increase in deferred policy acquisition costs	(21,467)	(16,280)
Increase in loss and loss adjustment expense reserves	206,304	150,817
Increase in unearned premiums	115,660	139,424
Decrease in accounts payable and accrued expenses	(11,708)	(12,958)
Share-based compensation	15	106
Other, net	9,191	31,965
Net cash provided by operating activities	284,871	428,029
Fixed maturity securities available for sale in nature:
Purchases	(1,299,431)	(1,044,819)
Sales	621,519	117,754
Calls or maturities	388,421	397,524
Equity securities available for sale in nature:
Purchases	(755,838)	(695,393)
Sales	843,283	689,484
Changes in securities payable and receivable	(11,303)	20,267
Decrease in short-term investments	39,634	213,553
Purchases of fixed assets	(25,589)	(29,498)
Other, net	3,811	1,842
Net cash used in investing activities	(195,493)	(329,286)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid to shareholders	(87,902)	(105,066)
Proceeds from stock options exercised	0	215
Payments on finance lease obligations	(1,147)	(765)
Net cash used in financing activities	(89,049)	(105,616)
Net increase (decrease) in cash	329	(6,873)
Cash:
Beginning of the year	335,557	348,479
End of period	335,886	341,606
SUPPLEMENTAL CASH FLOW DISCLOSURE
Interest paid	16,612	16,584
Income taxes paid, net	$ 179	$ 69,432