Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues and other items:
Sales	$ 241,526	$ 216,643
Other income (expense), net	824	2,565
Total revenues, net of other expenses	242,350	219,208
Costs and expenses:
Cost of goods sold	197,488	175,857
Freight	7,202	5,336
Selling, general and administrative	18,496	19,188
Research and development	3,164	3,646
Amortization of intangibles	1,775	1,412
Interest expense	690	1,007
Asset impairments and costs associated with exit and disposal activities	254	893
Total	229,069	207,339
Income from continuing operations before income taxes	13,281	11,869
Income taxes	3,764	4,132
Income from continuing operations	9,517	7,737
Income (loss) from discontinued operations	(5,240)	(4,739)
Net income (loss)	$ 4,277	$ 2,998
Basic
Continuing operations	$ 0.30	$ 0.24
Discontinued operations	$ (0.16)	$ (0.15)
Net income	$ 0.14	$ 0.09
Diluted
Continuing operations	$ 0.29	$ 0.24
Discontinued operations	$ (0.16)	$ (0.15)
Net income	$ 0.13	$ 0.09
Shares used to compute earnings per share:
Basic	32,076	32,010
Diluted	32,480	32,393
Dividends per share	$ 0.070	$ 0.045