Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net income	$ 304,257	$ 303,844
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Net (gains) losses on investments and other financial instruments	3,997	(5,349)
Purchases of mortgage loans held for sale	(613,469)	(64,508)
Proceeds from sales of mortgage loans held for sale	178,853	0
Proceeds from repayments of mortgage loans held for sale	6,879	8,165
Loss on extinguishment of debt	4,275	0
Amortization of other acquired intangible assets	0	2,741
Depreciation, other amortization, and other impairments, net	34,272	30,093
Deferred income tax provision	78,899	79,869
Change in:
Accrued investment income	(1,824)	(2,557)
Accounts and notes receivable	(13,845)	(18,126)
Reinsurance recoverable	(5,155)	2,654
Deferred policy acquisition costs	152	(812)
Prepaid federal income tax	(87,416)	(66,952)
Other assets	12,445	24,712
Unearned premiums	(19,302)	(24,813)
Reserve for losses and LAE	(12,678)	(47,409)
Reinsurance funds withheld	5,285	2,287
Other liabilities	(31,863)	(34,590)
Net cash provided by (used in) operating activities	(156,238)	189,249
Proceeds from sales of:
Fixed-maturities available for sale	300,023	230,081
Trading securities	0	9,122
Equity securities	14,507	45,295
Proceeds from redemptions of:
Fixed-maturities available for sale	429,889	250,764
Trading securities	10,553	1,310
Purchases of:
Fixed-maturities available for sale	(752,250)	(581,433)
Equity securities	(9,101)	(4,426)
Sales, redemptions and (purchases) of:
Short-term investments, net	(66,661)	(30,438)
Other assets and other invested assets, net	1,231	(195)
Additions to property and equipment	(2,624)	(10,113)
Net cash provided by (used in) investing activities	(74,433)	(90,033)
Cash flows from financing activities
Dividends and dividend equivalents paid	(78,070)	(75,201)
Issuance of common stock	887	1,514
Repurchases of common stock	(100,033)	(20,009)
Issuance of senior notes, net	616,745	0
Redemption of senior notes	(527,079)	0
Change in secured borrowings, net (with terms three months or less)	(69,717)	(12,635)
Proceeds from secured borrowings (with terms greater than three months)	552,681	54,580
Repayments of secured borrowings (with terms greater than three months)	(168,742)	(41,092)
Credit facility commitment fees paid	(282)	(474)
Net cash provided by (used in) financing activities	226,390	(93,317)
Increase (decrease) in cash and restricted cash	(4,281)	5,899
Cash and restricted cash, beginning of period	20,065	56,560
Cash and restricted cash, end of period	$ 15,784	$ 62,459