Operating Segments and Related Information (Details 6) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Business Unit Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 1,981,158	$ 1,387,975
United States
Business Unit Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	1,308,819	720,885
Europe [Member]
Business Unit Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	445,145	446,704
Other Geographic Region [Member]
Business Unit Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 227,194	$ 220,386