CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS (Unaudited) [Abstract]
Revenue	$ 346,009	$ 373,373	$ 692,235	$ 740,498
Cost of products sold	227,854	243,965	456,647	486,594
Selling and administrative expenses	73,088	79,664	144,075	195,574
Operating income	45,067	49,744	91,513	58,330
Interest expense	4,106	3,718	8,021	7,849
Earnings (Loss) before income taxes	40,961	46,026	83,492	50,481
Income taxes	11,419	15,879	23,215	17,703
Earnings from continuing operations	29,542	30,147	60,277	32,778
Loss from discontinued operations, net of tax	(92)	(1,086)	(301)	(5,792)
Net earnings	$ 29,450	$ 29,061	$ 59,976	$ 26,986
Weighted average number of shares outstanding:
Basic (in shares)	46,168	48,665	46,670	49,256
Diluted (in shares)	46,470	48,953	46,984	49,512
Basic:
Continuing operations (in dollars per share)	$ 0.64	$ 0.62	$ 1.29	$ 0.67
Discontinued operations (in dollars per share)	0	(0.02)	(0.01)	(0.12)
Earnings per common share (in dollars per share)	0.64	0.60	1.29	0.55
Diluted:
Continuing operations (in dollars per share)	0.64	0.62	1.28	0.66
Discontinued operations (in dollars per share)	0	(0.02)	(0.01)	(0.12)
Earnings per common share (in dollars per share)	0.63	0.59	1.28	0.55
Dividends declared per common share (in dollars per share)	$ 0.25	$ 0	$ 0.50	$ 0.48