Information on Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Segment	Mar. 31, 2013
Segment Reporting Information [Line Items]
Number of reportable segments	2
Net sales	$ 312,099	$ 263,545
Operating profit	35,124	24,955
Interest expense	3,319	4,357
Other expense (income), net	234	966
Income from continuing operations before income taxes	31,571	19,632
Aerospace [Member]
Segment Reporting Information [Line Items]
Net sales	108,212	98,045
Operating profit	15,750	10,346
Industrial [Member]
Segment Reporting Information [Line Items]
Net sales	203,888	165,502
Operating profit	19,374	14,609
Intersegment sales [Member]
Segment Reporting Information [Line Items]
Net sales	$ (1)	$ (2)