Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ (196,917)	$ 106,995
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,253	17,580
Net realized investment losses (gains)	195,086	(41,691)
Increase in premiums receivable	(25,403)	(26,941)
Decrease (increase) in reinsurance recoverables	9,894	(5,824)
Changes in current and deferred income taxes	(56,129)	25,427
(Increase) decrease in deferred policy acquisition costs	(7,662)	3,257
Increase in loss and loss adjustment expense reserves	81,396	49,796
Increase in unearned premiums	48,387	34,561
Increase (decrease) in accounts payable and accrued expenses	7,548	(2,423)
Share-based compensation	15	35
Other, net	28,110	13,747
Net cash provided by operating activities	106,578	174,519
Fixed maturity securities available for sale in nature:
Purchases	(338,829)	(230,038)
Sales	147,088	41,041
Calls or maturities	89,399	103,010
Equity securities available for sale in nature:
Purchases	(273,186)	(194,929)
Sales	263,352	240,657
Changes in securities payable and receivable	3,162	43,436
Decrease (increase) in short-term investments	5,372	(145,159)
Purchases of fixed assets	(8,273)	(7,929)
Other, net	1,494	543
Net cash used in investing activities	(110,421)	(149,368)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid to shareholders	(35,161)	(35,022)
Proceeds from stock options exercised	0	215
Payments on finance lease obligations	(789)	(393)
Net cash used in financing activities	(35,950)	(35,200)
Net decrease in cash	(39,793)	(10,049)
Cash:
Beginning of the year	335,557	348,479
End of period	295,764	338,430
SUPPLEMENTAL CASH FLOW DISCLOSURE
Interest paid	8,288	8,275
Income taxes refunded, net	$ 28	$ 0