CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income	$ 345,601	$ 424,281
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,372	29,523
Deferred tax expense (benefit)	(1,065)	3,378
Equity compensation	17,514	14,341
Loss on debt extinguishment	0	28,498
Net (gains) losses on investments and other financial instruments	12,685	5,518
Change in certain assets and liabilities:
Accrued investment income	12	267
Reinsurance recoverable on loss reserves	(6,235)	12,947
Reinsurance recoverable on paid losses	17,841	35,965
Premium receivable	934	(1,007)
Deferred insurance policy acquisition costs	2,162	668
Profit commission receivable	6,226	(3,054)
Loss reserves	(27,307)	(156,344)
Unearned premiums	(23,410)	(23,951)
Return premium accrual	(2,300)	(4,500)
Current income taxes	7,846	22,831
Other, net	(12,928)	(27,682)
Net cash provided by (used in) operating activities	356,948	361,679
Cash flows from investing activities:
Purchases of investments	(830,773)	(375,754)
Proceeds from sales of investments	269,728	266,374
Proceeds from maturity of fixed income securities	404,546	401,112
Proceeds from sale of equipment	142	0
Additions to property and equipment	(671)	(2,146)
Net cash provided by (used in) investing activities	(157,028)	289,586
Cash flows from financing activities:
Purchase of convertible junior subordinated debentures	0	(74,865)
Repayment of FHLB Advance	0	(155,000)
Cash portion of loss on debt extinguishment	0	(28,498)
Repurchase of common stock	(150,192)	(219,073)
Dividends paid	(58,718)	(50,838)
Payment of withholding taxes related to share-based compensation net share settlement	(7,199)	(8,688)
Net cash provided by (used in) financing activities	(216,109)	(536,962)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	(16,189)	114,303
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	332,913	304,958
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 316,724	$ 419,261