Operating Segments and Related Information (Details 6) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 1,430,580	$ 1,409,806
United States
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	689,044	676,007
Europe [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	508,272	490,089
Canada/Latin_America [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	225,100	235,921
Other Geographic Region [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 8,164	$ 7,789