Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net cash provided by (used in) operating activities	$ 176,850	$ 275,896
Cash flows from investing activities
Fixed-maturities available for sale	193,967	329,072
Trading securities	0	7,952
Equity securities	5,770	4,440
Fixed-maturities available for sale	477,664	619,265
Trading securities	45,521	10,606
Fixed-maturities available for sale	(906,025)	(944,618)
Equity securities	(9,112)	(61,235)
Short-term investments, net	213,095	(41,925)
Other assets and other invested assets, net	(791)	5,043
Additions to property and equipment	(7,485)	(4,993)
Net cash provided by (used in) investing activities	12,604	(76,393)
Cash flows from financing activities
Dividends and dividend equivalents paid	(71,288)	(52,036)
Issuance of common stock	569	1,112
Repurchases of common stock	(186,908)	(98,695)
Credit facility commitment fees paid	(380)	(471)
Change in secured borrowings, net (with terms three months or less)	46,605	4,348
Proceeds from secured borrowings (with terms greater than three months)	13,151	32,000
Repayments of secured borrowings (with terms greater than three months)	(8,000)	(42,000)
Net cash provided by (used in) financing activities	(206,251)	(155,742)
Increase (decrease) in cash and restricted cash	(16,797)	43,761
Cash and restricted cash, beginning of period	152,620	94,146
Cash and restricted cash, end of period	$ 135,823	$ 137,907