CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidated Condensed Statements of Earnings (Unaudited)
Revenue	$ 369,371	$ 363,751	$ 1,102,808	$ 1,090,431
Cost of products sold	251,778	249,086	749,928	748,916
Selling and administrative expenses	66,892	64,722	201,392	193,642
Operating income	50,701	49,943	151,488	147,873
Interest expense	4,483	4,934	13,236	14,919
Earnings (loss) before income taxes	46,218	45,009	138,252	132,954
Income taxes	13,342	13,012	41,565	41,056
Net earnings	$ 32,876	$ 31,997	$ 96,687	$ 91,898
Average number of common shares outstanding:
Basic (in shares)	49,536	49,776	49,616	49,723
Diluted (in shares)	49,785	49,967	49,850	49,911
Earnings per common share:
Basic (in dollars per share)	$ 0.66	$ 0.64	$ 1.95	$ 1.85
Diluted (in dollars per share)	$ 0.66	$ 0.64	$ 1.94	$ 1.84
Dividends per common share (in dollars per share)	$ 0.22	$ 0.21	$ 0.65	$ 0.63