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Consolidated Statement of Earnings (Unaudited) (USD $)
In Thousands, except Per Share data
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
REVENUE    
Net earned premium$ 544,256$ 516,166$ 1,576,987$ 1,532,138
Net investment income54,76551,137158,782150,603
Other operating income8,8297,88823,62535,035
Net realized investment gain2,6741,0573,1697,897
Other-than-temporary impairment credit losses0(300)(3,479)(300)
Total revenue610,524575,9481,759,0841,725,373
EXPENSE    
Loss and loss adjustment expense, net380,372297,1381,062,240922,645
Policy acquisition costs, net71,29980,748239,160242,078
Other operating expense70,45160,770198,511189,953
Interest expense5,6105,28016,59715,907
Total expense527,732443,9361,516,5081,370,583
Earnings before income tax expense82,792132,012242,576354,790
Income tax expense22,35538,94965,671106,993
Net earnings$ 60,437$ 93,063$ 176,905$ 247,797
Earnings per common share    
Basic$ 0.56$ 0.81$ 1.58$ 2.15
Diluted$ 0.56$ 0.81$ 1.57$ 2.15