Acquisitions (Purchase Price Allocations Related To Acquisitions) (Details) - acquisition	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Manufacturer and distributor of home and garden products; Manufacturer and distributor of silt fence; Engineered hydraulic cylinders | Residential Products and Specialized Products
Business Acquisition [Line Items]
Number of Acquisitions	3
Distributor and installer of geosynthetic products; Flooring products; Surface-critical bent tube components | Residential Products and Furniture Products
Business Acquisition [Line Items]
Number of Acquisitions		3
Distributor of geosynthetic products; Innersprings; Fabricated aerospace tubing and pipe assemblies | Residential Products and Specialized Products
Business Acquisition [Line Items]
Number of Acquisitions			3