Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Business Acquisitions) (Details) - USD ($) $ in Thousands		1 Months Ended			3 Months Ended
	Feb. 01, 2017	Feb. 28, 2018	Jan. 31, 2018	Feb. 28, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Cash consideration net of cash acquired					$ 138,570	$ 10,689
Goodwill					$ 147,291	$ 98,105	$ 124,183
Taylor Made
Business Acquisition [Line Items]
Cash consideration			$ 88,445
Net tangible assets			42,133
Total fair value of net assets acquired			74,133
Goodwill			14,312
Hehr
Business Acquisition [Line Items]
Cash consideration		$ 50,125
Identifiable intangible assets		25,500
Net tangible assets		17,955
Total fair value of net assets acquired		43,455
Goodwill		$ 6,670
SessaKlein S.p.A.
Business Acquisition [Line Items]
Cash consideration net of cash acquired	$ 6,502
Contingent consideration	3,838
Total fair value of consideration given	$ 10,340			$ 8,500
Identifiable intangible assets				2,286
Net tangible assets				364
Total fair value of net assets acquired				2,650
Goodwill				$ 7,690
Customer Relationships | Taylor Made
Business Acquisition [Line Items]
Identifiable intangible assets			25,000
Other Intangible Assets | Taylor Made
Business Acquisition [Line Items]
Identifiable intangible assets			$ 7,000