Revenue from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The following tables illustrate the disaggregation of revenue by geographic area, groups of similar products and services and sales channels for the three months ended March 31, 2018 and 2017 (in thousands):

Net Sales by geographic area



	Three Months Ended
	March 31
	2018		2017
Americas	$	162,638	$	142,770
Europe, Middle East and Africa	88,816		33,276
Asia Pacific	21,393		15,013
Total	$	272,847	$	191,059

Net Sales are attributed to each geographic area based on the country from which the product was shipped and are net of intercompany sales.

Net Sales by groups of similar products and services



	Three Months Ended
	March 31
	2018		2017
Equipment	$	172,074	$	113,341
Parts and Consumables	57,441		42,803
Specialty Surface Coatings	6,455		6,681
Service and Other	36,877		28,234
Total	$	272,847	$	191,059

Net Sales by sales channel



	Three Months Ended
	March 31
	2018		2017
Sales Direct to Consumer	$	178,710	$	143,623
Sales to Distributors	94,137		47,436
Total	$	272,847	$	191,059

Schedule of Future Performance Obligations Satisfied for Which Consideration from Customer has been Received or is Due [Table Text Block]

At March 31, 2018, $4,732 and $2,669 of unearned revenue associated with outstanding prepaid service contracts was reported in Other Current Liabilities and Other Liabilities, respectively, on our Condensed Consolidated Balance Sheet. Of this, we expect to recognize the following approximate amounts in Net Sales in the following periods:



Remaining 2018	$	3,799
2019	1,835
2020	1,115
2021	416
2022	230
Thereafter	6
Total	$	7,401