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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating Activities
Net income	$ 49,419	$ 133,614
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	29,634	28,327
Stock-based compensation expense	11,198	11,654
Undistributed losses (gains) of equity method investments	7,319	(4,934)
Distributions in excess of current year income of equity method investments	8,488	2,157
Net realized and unrealized losses (gains)	32,017	(17,478)
Loss on disposal of fixed assets	17	0
Changes in assets and liabilities:
Increase in reserve for loss and loss expense, net of reinsurance recoverable	101,151	105,082
Increase in unearned premiums, net of prepaid reinsurance	89,705	99,152
Decrease in net federal income taxes	8,340	1,698
Increase in premiums receivable	(44,095)	(107,190)
Increase in deferred policy acquisition costs	(14,269)	(20,516)
Increase in interest and dividends due or accrued	(934)	(1,399)
Decrease in accrued salaries and benefits	(44,082)	(29,124)
Increase in other assets	(2,753)	(22,320)
Decrease in other liabilities	(33,770)	(13,583)
Net Cash Provided by Operating Activities	197,385	165,140
Investing Activities
Purchase of fixed income securities, available-for-sale	(961,803)	(891,241)
Purchase of commercial mortgage loans	(17,934)	0
Purchase of equity securities	(73,879)	(24,699)
Purchase of other investments	(39,400)	(25,822)
Purchase of short-term investments	(3,368,828)	(3,258,852)
Sale of fixed income securities, available-for-sale	302,342	372,159
Proceeds from commercial mortgage loans	54	0
Sale of short-term investments	3,278,106	3,291,878
Redemption and maturities of fixed income securities, held-to-maturity	1,200	4,643
Redemption and maturities of fixed income securities, available-for-sale	461,527	236,705
Sale of equity securities	1,320	30,094
Sale of other investments	53	12,609
Distributions from other investments	7,349	14,489
Purchase of property and equipment	(12,634)	(16,985)
Net Cash Used in Investing Activities	(422,527)	(255,022)
Financing Activities
Dividends to stockholders	(26,631)	(22,940)
Acquisition of treasury stock	(6,982)	(6,715)
Net proceeds from stock purchase and compensation plans	4,731	5,100
Proceeds from borrowings	387,000	340,757
Repayments of borrowings	(135,000)	(235,000)
Repayments of finance lease obligations	(314)	(596)
Net Cash Provided by Financing Activities	222,804	80,606
Cash and restricted cash, beginning of year	7,975	16,919
Cash and restricted cash, end of period	5,637	7,643
Net decrease in cash and restricted cash	$ (2,338)	$ (9,276)

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