Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Income [Abstract]
Net sales	$ 745,345	$ 757,414	$ 760,941
Cost of goods sold	453,710	466,860	455,545
Gross profit	291,635	290,554	305,396
Selling, general and administrative expenses	147,198	157,688	169,774
Technical, product engineering, and research expenses	59,128	55,667	52,962
Restructuring and other, net	5,759	25,108	7,061
Pension settlement expense	8,190		119,735
Operating income/(loss)	71,360	52,091	(44,136)
Interest income	(1,541)	(1,468)	(1,517)
Interest expense	12,254	15,227	18,118
Other (income)/expense, net	(6,853)	7,256	7,629
Income/(loss) before income taxes	67,500	31,076	(68,366)
Income tax expense/(benefit)	25,751	13,372	(27,523)
Income/(loss) from continuing operations	41,749	17,704	(40,843)
(Loss)/income from operations of discontinued businesses		(75)	4,776
Gain/(loss) on sale of discontinued businesses			92,296
Income tax (benefit)/expense on discontinued operations		(29)	25,252
(Loss)/income from discontinued operations		(46)	71,820
Net income	41,749	17,658	30,977
Net income attributable to the noncontrolling interest	180	141
Net income attributable to the Company	$ 41,569	$ 17,517	$ 30,977
Earnings per share attributable to Company shareholders - Basic
Income/(loss) from continuing operations	$ 1.31	$ 0.55	$ (1.30)
Discontinued operations	$ 0.00	$ 0.00	$ 2.29
Net Income attributable to the Company	$ 1.31	$ 0.55	$ 0.99
Earnings per share attributable to Company shareholders - Diluted
Income/(loss) from continuing operations	$ 1.30	$ 0.55	$ (1.30)
Discontinued operations	$ 0.00	$ 0.00	$ 2.27
Net Income attributable to the Company	$ 1.30	$ 0.55	$ 0.97	[1]
Dividends declared per share	$ 0.63	$ 0.59	$ 0.55

[1] Due to a loss from continuing operations in 2012, the calculation of diluted income per share cannot be calculated by dividing net income by the diluted shares in the table above. See Statement of Income.