Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 266,781	$ 246,061
Accumulated depreciation	(108,425)	(87,086)
Property, plant and equipment, net	238,404	179,614
Depreciation	22,200	19,900	$ 14,200
Outside the United States [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	65,100	52,600
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	17,410	17,409
Buildings and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	88,825	85,767
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	160,546	142,885
Property, plant and equipment in service, net [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	158,356	158,975
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 80,048	$ 20,639