Segments - Schedule of PP&E, Goodwill and Intangible Assets by Area (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 152,306	$ 151,408
Goodwill	466,614	458,737
Intangibles, net	181,856	189,770
United States
Segment Reporting Information [Line Items]
Property, plant and equipment, net	136,706	135,330
Goodwill	440,090	431,476
Intangibles, net	174,852	182,070
Canada
Segment Reporting Information [Line Items]
Property, plant and equipment, net	15,600	16,078
Goodwill	26,524	27,261
Intangibles, net	$ 7,004	$ 7,700