Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities
Net income	$ 286,354	$ 304,257
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Purchases of residential mortgage loans held for sale	(1,155,133)	(613,469)
Proceeds from sales of residential mortgage loans held for sale	185,589	178,853
Principal payments from residential mortgage loans held for sale	20,797	6,879
Net (gains) losses on investments and other financial instruments	5,575	3,997
Net (gains) losses on consolidated VIE assets and liabilities	651	0
Loss on extinguishment of debt	0	4,275
Depreciation, other amortization, and other impairments, net	41,100	34,272
Deferred income tax provision	74,144	78,899
Change in:
Accrued investment income	(5,021)	(1,824)
Accounts and notes receivable	(1,719)	(13,845)
Reinsurance recoverable	(7,219)	(5,155)
Deferred policy acquisition costs	498	152
Prepaid federal income tax	(76,725)	(87,416)
Other assets	9,375	12,445
Unearned premiums	(16,436)	(19,302)
Reserve for losses and LAE	22,777	(12,678)
Reinsurance funds withheld	6,183	5,285
Other liabilities	(36,319)	(31,863)
Net cash provided by (used in) operating activities	(645,529)	(156,238)
Proceeds from sales of:
Available for sale securities	233,741	300,023
Equity securities	17,908	14,507
Proceeds from redemptions of:
Available for sale securities	413,744	429,889
Trading securities	10,403	10,553
Purchases of:
Available for sale securities	(560,977)	(752,250)
Equity securities	(10,184)	(9,101)
Sales, redemptions and (purchases) of:
Short-term investments, net	23,185	(66,661)
Other assets and other invested assets, net	(325)	1,231
Principal payments from securitized residential mortgage loans held for investment	106,308	0
Additions to property and equipment	(2,493)	(2,624)
Net cash provided by (used in) investing activities	231,310	(74,433)
Cash flows from financing activities
Dividends and dividend equivalents paid	(75,915)	(78,070)
Issuance of common stock	779	887
Repurchases of common stock, including excise taxes paid	(431,909)	(100,033)
Issuance of senior notes	0	616,745
Redemption of senior notes	0	(527,079)
Issuance of securitized nonrecourse debt	745,117	0
Repayments of securitized nonrecourse debt	(106,308)	0
Proceeds (repayments) related to cash collateral for loaned securities, net	38,806	(50,967)
Proceeds from secured borrowings	1,934,981	830,123
Repayments of secured borrowings	(1,710,341)	(464,934)
Proceeds from credit facility borrowings	50,000	0
Repayments of credit facility borrowings	(50,000)	0
Credit facility commitment fees paid	(268)	(282)
Net cash provided by (used in) financing activities	394,942	226,390
Increase (decrease) in cash and restricted cash	(19,277)	(4,281)
Cash and restricted cash, beginning of period	41,472	20,065
Cash and restricted cash, end of period	22,195	15,784
Supplemental noncash information
Transfer from residential mortgage loans held for sale to securitized residential mortgage loans held for investment	767,948	0
Retention of mortgage servicing and other related rights from residential mortgage loan sales	$ 3,219	$ 1,484