CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 174,097	$ 154,547
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,485	10,192
Deferred tax expense (benefit)	6,131	1,732
Equity compensation	11,105	9,679
Net gains (losses) on investments and other financial instruments	(8,509)	(7,698)
Change in certain assets and liabilities:
Accrued investment income	681	628
Reinsurance recoverable on loss reserves	(5,898)	(4,521)
Reinsurance recoverable on paid losses	9,341	17,936
Premiums receivable	2,466	625
Deferred insurance policy acquisition costs	745	965
Loss reserves	(932)	527
Unearned premiums	(8,844)	(11,822)
Return premium accrual	(2,600)	(1,300)
Current income taxes	39,839	39,481
Other, net	(50,588)	(14,081)
Net cash provided by (used in) operating activities	190,537	212,286
Cash flows from investing activities:
Purchases of investments	(327,757)	(229,198)
Proceeds from sales of investments	14,841	32,991
Proceeds from maturity of fixed income securities	338,885	131,389
Additions to property and equipment	0	(363)
Net cash provided by (used in) investing activities	25,969	(65,181)
Cash flows from financing activities:
Repurchase of common stock	(95,183)	(76,151)
Dividends paid	(33,353)	(30,096)
Payment of withholding taxes related to share-based compensation net share settlement	(19,046)	(7,199)
Net cash provided by (used in) financing activities	(147,582)	(113,446)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	68,924	33,659
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	370,644	332,913
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 439,568	$ 366,572