Segment Results (Schedule Of Assets By Segment) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 2,850,413	$ 2,843,531
Aerospace & Electronics [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	517,105	514,240
Engineered Materials [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	249,429	245,350
Merchandising Systems [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	416,601	408,857
Fluid Handling [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	951,781	909,265
Controls [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	65,542	64,162
Corporate [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 649,955	$ 701,657