Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net cash provided by (used in) operating activities	$ 51,044	$ 116,778
Proceeds from sales of:
Fixed-maturities available for sale	130,248	110,882
Trading securities	0	9,123
Equity securities	840	2,076
Proceeds from redemptions of:
Fixed-maturities available for sale	164,685	110,973
Trading securities	704	211
Purchases of:
Fixed-maturities available for sale	(328,174)	(300,474)
Equity securities	(816)	(1,572)
Sales, redemptions and (purchases) of:
Short-term investments, net	(39,147)	43,190
Other assets and other invested assets, net	(180)	(165)
Additions to property and equipment	(1,558)	(4,786)
Net cash provided by (used in) investing activities	(73,398)	(30,542)
Cash flows from financing activities
Dividends and dividend equivalents paid	(37,563)	(35,685)
Issuance of common stock	460	983
Repurchases of common stock	(50,018)	(15,007)
Issuance of senior notes, net	617,164	0
Redemption of senior notes	(527,079)	0
Change in secured borrowings, net (with terms three months or less)	(68,832)	(52,120)
Proceeds from secured borrowings (with terms greater than three months)	145,977	10,569
Repayments of secured borrowings (with terms greater than three months)	(48,853)	(599)
Credit facility commitment fees paid	(142)	(193)
Net cash provided by (used in) financing activities	31,114	(92,052)
Increase (decrease) in cash and restricted cash	8,760	(5,816)
Cash and restricted cash, beginning of period	20,065	56,560
Cash and restricted cash, end of period	$ 28,825	$ 50,744