Intangible Assets (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 15,631	$ 8,959
Accumulated Amortization	(5,649)	(4,466)
Finite-lived intangible assets, net	9,982	4,493
Net Carrying Amount, Intangible Assets	$ 964,911	995,170
Minimum [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	2 years
Maximum [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	15 years
Trademarks [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets	$ 954,929	$ 990,677	$ 1,025,260
Trademarks [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives		4 years
Gross Carrying Amount	12,438	$ 5,462
Accumulated Amortization	(2,689)	(1,913)
Finite-lived intangible assets, net	$ 9,749	$ 3,549
Trademarks [Member] | Minimum [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	5 years	5 years
Trademarks [Member] | Maximum [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	15 years	15 years
Customer Contracts [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	4 years
Gross Carrying Amount	$ 2,832	$ 2,832
Accumulated Amortization	(2,639)	(2,257)
Finite-lived intangible assets, net	$ 193	$ 575
Patents [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	10 years	10 years
Gross Carrying Amount	$ 361	$ 665
Accumulated Amortization	(321)	(296)
Finite-lived intangible assets, net	$ 40	$ 369