Segment Results (Schedule Of Financial Information By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011		Sep. 30, 2010
Segment Reporting Information [Line Items]
Number of reportable segments			5
Net sales	$ 659,456	$ 560,714	$ 1,914,249		$ 1,643,819
Operating profit (loss)	82,116	62,879	234,919		181,463
Interest income	442	299	1,121		760
Interest expense	(6,474)	(6,738)	(19,525)		(20,121)
Miscellaneous - net	(73)	1,522	3,262	[1]	897
Income before income taxes	76,011	57,962	219,777		162,999
Aerospace And Electronics [Member]
Segment Reporting Information [Line Items]
Net sales	172,216	143,161	505,690		416,105
Operating profit (loss)	35,640	25,368	106,839		76,072
Engineered Materials [Member]
Segment Reporting Information [Line Items]
Net sales	53,101	54,904	175,034		167,305
Operating profit (loss)	5,919	7,965	25,192		26,677
Merchandising Systems [Member]
Segment Reporting Information [Line Items]
Net sales	98,815	77,199	287,703		221,897
Operating profit (loss)	10,845	6,261	22,632		19,340
Fluid Handling [Member]
Segment Reporting Information [Line Items]
Net sales	303,553	255,842	856,660		758,218
Operating profit (loss)	40,866	33,197	113,262		93,338
Controls [Member]
Segment Reporting Information [Line Items]
Net sales	31,771	29,608	89,162		80,294
Operating profit (loss)	4,619	1,949	11,447		2,900
Corporate [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (15,773)	$ (11,861)	$ (44,453)		$ (36,864)

[1] Primarily related to the sale of a building in the first quarter of 2011