CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net Income (Loss)	$ 377,942	$ 378,325
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,228	10,969
Deferred tax expense (benefit)	5,943	4,508
Equity compensation	12,869	18,286
Net (gains) losses on investments and other financial instruments	685	8,785
Change in certain assets and liabilities:
Accrued investment income	1,958	(1,628)
Reinsurance recoverable on loss reserves	(6,500)	(9,044)
Reinsurance recoverable on paid losses	2,156	9,012
Premiums receivable	300	1,902
Deferred insurance policy acquisition costs	1,420	1,465
Loss reserves	(10,508)	(27,765)
Unearned premiums	(15,311)	(18,894)
Return premium accrual	(2,171)	(5,700)
Current income taxes	61,484	26,993
Other, net	(28,848)	(37,439)
Net cash provided by (used in) operating activities	406,647	359,775
Cash flows from investing activities:
Purchases of investments	(771,072)	(737,607)
Proceeds from sales of investments	41,017	12,841
Proceeds from maturity of fixed income securities	882,984	616,633
Additions to property and equipment	(145)	(279)
Net cash provided by (used in) investing activities	152,784	(108,412)
Cash flows from financing activities:
Repurchase of common stock	(411,585)	(251,217)
Dividends paid	(64,677)	(63,936)
Payment of withholding taxes related to share-based compensation net share settlement	(18,901)	(19,046)
Net cash provided by (used in) financing activities	(495,163)	(334,199)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	64,268	(82,836)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	234,627	370,644
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 298,895	$ 287,808