Accumulated Other Comprehensive Loss (Details) $ in Thousands, € in Millions	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at December 31, 2015	$ 112,040
Accumulated other comprehensive loss at September, 2016	60,474
Goodwill		€ 15.7	$ 23,412	$ 26,274
Foreign currency translation adjustments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at December 31, 2015	(14,781)
Net current-period other comprehensive loss	(5,282)
Accumulated other comprehensive loss at September, 2016	(20,063)
AOCI including portion attributable to noncontrolling interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at December 31, 2015	(14,781)
Net current-period other comprehensive loss	(5,282)
Accumulated other comprehensive loss at September, 2016	$ (20,063)