Consolidated Statements Of Income (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
Revenues and other items:
Sales	$ 218,809	$ 202,590	$ 652,120	$ 595,080
Other income (expense), net	2,939	1,334	8,154	1,957
Revenues, total	221,748	203,924	660,274	597,037
Costs and expenses:
Cost of goods sold	173,814	164,771	526,471	489,754
Freight	6,130	4,636	17,404	13,377
Selling, general and administrative	16,237	17,926	55,112	49,335
Research and development	3,429	3,298	10,163	10,042
Amortization of intangibles	1,305	130	4,047	388
Interest expense	708	367	2,732	1,083
Asset impairments and costs associated with exit and disposal activities	937	193	3,151	1,277
Total	202,560	191,321	619,080	565,256
Income from continuing operations before income taxes	19,188	12,603	41,194	31,781
Income taxes from continuing operations	4,661	(133)	11,516	6,329
Income from continuing operations	14,527	12,736	29,678	25,452
Loss from discontinued operations	(7,100)		(11,900)	(345)
Net income	$ 7,427	$ 12,736	$ 17,778	$ 25,107
Basic
Continuing operations	$ 0.45	$ 0.40	$ 0.93	$ 0.80
Discontinued operations	$ (0.22)		$ (0.37)	$ (0.01)
Net income	$ 0.23	$ 0.40	$ 0.56	$ 0.79
Diluted
Continuing operations	$ 0.45	$ 0.40	$ 0.92	$ 0.79
Discontinued operations	$ (0.22)		$ (0.37)	$ (0.01)
Net income	$ 0.23	$ 0.40	$ 0.55	$ 0.78
Shares used to compute earnings per share:
Basic	32,052	31,952	32,038	31,918
Diluted	32,101	32,060	32,198	32,175
Dividends per share	$ 0.060	$ 0.045	$ 0.150	$ 0.135