Indefinite-Lived Intangible Assets- Goodwill and Intangible Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Indefinite-Lived Intangible Assets
Gross Carrying Amount	$ 53,178	$ 54,537
Accumulated Amortization	(28,776)	(25,211)
Intangible assets, net	24,402	29,326
Trade Name
Indefinite-Lived Intangible Assets
Intangible assets, net	600
North America
Indefinite-Lived Intangible Assets
Gross Carrying Amount	30,825	30,775
Accumulated Amortization	(16,002)	(13,732)
Intangible assets, net	14,823	17,043
Europe
Indefinite-Lived Intangible Assets
Gross Carrying Amount	22,353	23,762
Accumulated Amortization	(12,774)	(11,479)
Intangible assets, net	$ 9,579	$ 12,283