Segment Results (Schedule Of Assets By Segment) (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 2,850,103	$ 2,889,878
Aerospace and Electronics
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	514,088	509,672
Engineered Materials
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	241,554	237,478
Merchandising Systems
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	400,420	408,702
Fluid Handling
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	998,465	993,275
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 695,576	$ 740,751