Operating Segments and Related Information (Details 5) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 1,063,457	$ 994,881
United States
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	666,759	623,522
Europe [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	383,501	319,661
Other Geographic Region [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 13,197	$ 51,698