Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities
Net earnings	$ 193,334	$ 205,047
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in premium, claims and other receivables	(194,834)	(109,043)
Change in reinsurance recoverables	180,540	96,770
Change in ceded unearned premium	(21,520)	(35,485)
Change in loss and loss adjustment expense payable	(241,159)	(57,118)
Change in unearned premium	216,788	138,248
Change in reinsurance, premium and claims payable	32,494	55,764
Change in accounts payable and accrued liabilities	(73,290)	(69,414)
Stock-based compensation expense	10,947	10,303
Depreciation and amortization expense	12,322	8,289
Gain on investments	(13,759)	(25,151)
Other, net	(69,110)	(22,924)
Cash provided by operating activities	32,753	195,286
Investing activities
Sales of available for sale fixed maturity securities	398,848	286,843
Sales of equity securities	71,970	170,182
Maturity or call of available for sale fixed maturity securities	363,541	269,468
Cost of available for sale fixed maturity securities acquired	(518,929)	(675,945)
Cost of equity securities acquired	(147,232)	(78,817)
Cost of other investments acquired	(25,000)
Change in short-term investments	(31,300)	(168,241)
Payments for purchase of businesses, net of cash received	(99,060)	(2,579)
Proceeds from sales of subsidiaries		12,942
Other, net	(4,584)	(3,902)
Cash provided (used) by investing activities	8,254	(190,049)
Financing activities
Advances on line of credit	210,000	140,000
Payments on line of credit	(140,004)	(60,000)
Sale of common stock	6,768	11,709
Purchase of common stock	(69,569)	(41,542)
Dividends paid	(56,722)	(45,076)
Other, net	(11,709)	2,278
Cash provided (used) by financing activities	(61,236)	7,369
Net increase (decrease) in cash	(20,229)	12,606
Cash at beginning of year	102,093	58,301
Cash at end of period	$ 81,864	$ 70,907