Consolidated Statement of Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
REVENUE
Net earned premium	$ 562,612	$ 561,186
Net investment income	56,806	55,765
Other operating income	9,266	8,845
Net realized investment gain	20,246	8,570
Total revenue	648,930	634,366
EXPENSE
Loss and loss adjustment expense, net	321,844	332,697
Policy acquisition costs, net	69,041	66,949
Other operating expense	95,954	76,853
Interest expense	7,119	6,471
Total expense	493,958	482,970
Earnings before income taxes	154,972	151,396
Income tax expense	47,061	45,546
Net earnings	$ 107,911	$ 105,850
Earnings per common share
Basic	$ 1.08	$ 1.05
Diluted	$ 1.07	$ 1.05