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Schedule of Tangible Long-Lived Assets by Geographic Area (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets      
Long-Lived Assets $ 2,542,911 $ 1,220,162 $ 913,089
UNITED STATES      
Revenues from External Customers and Long-Lived Assets      
Long-Lived Assets 1,467,701 620,125 583,236
UNITED KINGDOM      
Revenues from External Customers and Long-Lived Assets      
Long-Lived Assets 330,113 165,145 178,021
Other countries      
Revenues from External Customers and Long-Lived Assets      
Long-Lived Assets 404,102 217,416 151,791
GERMANY      
Revenues from External Customers and Long-Lived Assets      
Long-Lived Assets $ 340,995 $ 217,476 $ 41