Acquisitions, Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended					3 Months Ended	12 Months Ended
	May 31, 2016	Feb. 29, 2016	Jan. 31, 2016	Apr. 30, 2015	Jan. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	May 01, 2016
Project 2000
Business Acquisition [Line Items]
Percentage of interests acquired								100.00%
Annual sales of acquired entity							$ 12,000
Cash consideration	$ 18,800
Spectal Industries
Business Acquisition [Line Items]
Annual sales of acquired entity				$ 25,000
Cash consideration				$ 22,335
Spectal Industries | Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets useful life				15 years
EA Technologies
Business Acquisition [Line Items]
Annual sales of acquired entity					$ 17,000
Cash consideration					$ 9,248	$ 6,600
Flair Interiors
Business Acquisition [Line Items]
Annual sales of acquired entity		$ 25,000
Cash consideration		$ 8,100
Flair Interiors | Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets useful life	15 years	10 years
Highwater Marine Furniture
Business Acquisition [Line Items]
Annual sales of acquired entity			$ 20,000
Cash consideration			$ 10,000
Highwater Marine Furniture | Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets useful life			15 years