Schedule of Tangible Long-Lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	$ 2,487,448	$ 1,220,162
UNITED STATES
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	1,485,843	620,125
UNITED KINGDOM
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	306,611	165,145
Other countries
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	399,424	217,416
GERMANY
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	$ 295,570	$ 217,476