Revenue from Contracts with Customers (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue, Net	$ 292,197	$ 270,791	$ 565,044	$ 461,850
Sales Direct to Consumer
Disaggregation of Revenue [Line Items]
Revenue, Net	187,468	174,426	366,178	318,049
Sales to Distributors
Disaggregation of Revenue [Line Items]
Revenue, Net	104,729	96,365	198,866	143,801
Equipment
Disaggregation of Revenue [Line Items]
Revenue, Net	192,078	176,767	364,152	290,108
Parts and Consumables
Disaggregation of Revenue [Line Items]
Revenue, Net	57,411	52,922	114,852	95,725
Specialty Surface Coatings
Disaggregation of Revenue [Line Items]
Revenue, Net	7,840	7,803	14,295	14,484
Services and Other
Disaggregation of Revenue [Line Items]
Revenue, Net	34,868	33,299	71,745	61,533
Americas
Disaggregation of Revenue [Line Items]
Revenue, Net	178,752	169,146	341,390	311,916
EMEA
Disaggregation of Revenue [Line Items]
Revenue, Net	87,410	77,356	176,226	110,632
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, Net	$ 26,035	$ 24,289	$ 47,428	$ 39,302