Accumulated Other Comprehensive Loss (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at December 31, 2016	$ 53,398
Accumulated other comprehensive loss at March 31, 2017	31,776
Foreign currency translation adjustments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at December 31, 2016	(21,748)
Net current-period other comprehensive loss	517
Accumulated other comprehensive loss at March 31, 2017	(21,231)
AOCI including portion attributable to noncontrolling interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at December 31, 2016	(21,748)
Net current-period other comprehensive loss	517
Accumulated other comprehensive loss at March 31, 2017	$ (21,231)