Goodwill and Intangible Assets - Schedule of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Intangible assets subject to amortization
Gross carrying amount	$ 243,447	$ 238,867
Accumulated amortization	(110,894)	(106,410)
Foreign currency translation adjustment	(8,270)	(8,281)
Total	124,283	124,176
Intangible assets with indefinite lives
Gross carrying amount	10,303	14,883
Foreign currency translation adjustment	(1,080)	(1,124)
Total	9,223	13,759
Total intangible assets, net	$ 133,506	$ 137,935