Breakdown of Revenue and Non-Current Assets by Geographical Areas - Revenue by Significant Other Countries (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,799,146	$ 1,323,169	$ 988,249
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	630,047	419,742	237,385
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	137,116	111,792	105,544
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	115,053	107,071	90,315
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 285,959	$ 190,066	$ 154,798