Intangible Assets (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Schedule Of Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 15,029	$ 14,999
Accumulated Amortization	(6,116)	(5,157)
Finite-lived intangible assets, net	8,913	9,842
Net Carrying Amount, Intangible Assets	$ 633,937	634,827
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	$ 625,024	624,985
Trademarks [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,468	12,438
Accumulated Amortization	(3,600)	(2,689)
Finite-lived intangible assets, net	$ 8,868	$ 9,749
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	4 years
Gross Carrying Amount	$ 2,200	$ 2,200
Accumulated Amortization	(2,191)	(2,147)
Finite-lived intangible assets, net	$ 9	$ 53
Patents [Member]
Schedule Of Finite Lived Intangible Assets [Line Items]
Useful Lives	10 years	10 years
Gross Carrying Amount	$ 361	$ 361
Accumulated Amortization	(325)	(321)
Finite-lived intangible assets, net	$ 36	$ 40