CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 673,906	$ 461,049
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	42,826	49,820
Deferred tax expense	1,900	4,591
Equity compensation	17,674	12,077
Loss on debt extinguishment	40,130	0
Net (gains) losses on investments and other financial instruments	8,776	(5,773)
Change in certain assets and liabilities:
Accrued investment income	(965)	(3,598)
Reinsurance recoverable on loss reserves	20,521	(11,987)
Reinsurance recoverable on paid losses	36,061	143
Premium receivable	(1,114)	(344)
Deferred insurance policy acquisition costs	1,696	(723)
Profit commission receivable	(1,497)	(18,564)
Loss reserves	(280,152)	52,372
Unearned premiums	(33,755)	(30,582)
Return premium accrual	(9,200)	7,200
Current income taxes	3,140	5,453
Other, net	(36,154)	(8,724)
Net cash provided by (used in) operating activities	483,793	512,410
Cash flows from investing activities:
Purchases of investments	(544,224)	(1,335,569)
Proceeds from sales of investments	391,394	239,483
Proceeds from maturity of fixed income securities	536,194	700,301
Additions to property and equipment	(2,402)	(2,388)
Net cash provided by (used in) investing activities	380,962	(398,173)
Cash flows from financing activities:
Purchase of convertible junior subordinated debentures	(88,908)	0
Redemption of 5.75% senior notes	(242,296)	0
Repayment of FHLB Advance	(155,000)	0
Cash portion of loss on debt extinguishment	(39,445)	0
Repurchase of common stock	(303,060)	(150,000)
Dividends paid	(81,288)	(68,276)
Payment of withholding taxes related to share-based compensation net share settlement	(9,958)	(6,729)
Net cash provided by (used in) financing activities	(919,955)	(225,005)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	(55,200)	(110,768)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	304,958	296,680
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 249,758	$ 185,912