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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Activities
Net income	$ 274,167	$ 135,648
Adjustments to reconcile net income to net cash provided by operating activities:
Realized investment losses (gains), net	7,352	(641)
Income from other invested assets	(24,705)	(526)
Distribution of income from other invested assets	4,452	428
Depreciation and amortization	755	863
Stock-based compensation expense	4,807	5,179
Amortization of premium on investment securities	7,123	6,468
Deferred income tax provision	22,162	23,714
Change in:
Accrued investment income	3,313	(3,652)
Accounts receivable	1,009	3,867
Deferred policy acquisition costs	1,030	2,282
Other assets	4,910	(6,874)
Reserve for losses and LAE	(114,373)	36,182
Unearned premium reserve	(15,599)	(14,706)
Other accrued liabilities	4,226	(461)
Net cash provided by operating activities	180,629	187,771
Investing Activities
Net change in short-term investments	(204,276)	277,528
Purchase of investments available for sale	(281,565)	(681,516)
Proceeds from maturities and paydowns of investments available for sale	54,035	56,603
Proceeds from sales of investments available for sale	493,211	166,390
Purchase of other invested assets	(21,796)	(11,150)
Return of investment from other invested assets	0	6,460
Purchase of property and equipment	(716)	(574)
Net cash provided by (used in) investing activities	38,893	(186,259)
Financing Activities
Treasury stock acquired	(75,422)	(5,377)
Payment of issuance costs for credit facility	(154)	0
Dividends paid	(21,592)	(17,943)
Net cash used in financing activities	(97,168)	(23,320)
Net increase (decrease) in cash	122,354	(21,808)
Cash at beginning of year	81,491	102,830
Cash at end of period	203,845	81,022
Supplemental Disclosure of Cash Flow Information
Interest payments	(1,886)	(1,762)
Noncash Transactions
Lease liabilities arising from obtaining right-of-use assets	$ 9,174	$ 0

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