Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 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 and nine months ended September 30, 2018 and 2017 (in thousands):

Net Sales by geographic area

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2018		2017		2018		2017
Americas	$	175,341	$	161,037	$	516,731	$	472,953
Europe, Middle East and Africa	74,254		78,851		250,480		189,483
Asia Pacific	23,660		22,033		71,088		61,335
Total	$	273,255	$	261,921	$	838,299	$	723,771

Net Sales are attributed to each geographic area based on the end user country and are net of intercompany sales.

Net Sales by groups of similar products and services

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2018		2017		2018		2017
Equipment	$	178,165	$	165,203	$	542,317	$	455,311
Parts and Consumables	53,639		53,535		168,491		149,260
Specialty Surface Coatings	7,139		8,007		21,434		22,491
Service and Other	34,312		35,176		106,057		96,709
Total	$	273,255	$	261,921	$	838,299	$	723,771

Net Sales by sales channel

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2018		2017		2018		2017
Sales Direct to Consumer	$	180,901	$	172,484	$	547,079	$	490,533
Sales to Distributors	92,354		89,437		291,220		233,238
Total	$	273,255	$	261,921	$	838,299	$	723,771

Contract with Customer, Asset and Liability [Table Text Block]

The change in our sales incentive accrual balance for the nine months ended September 30, 2018 was as follows:

	Nine Months Ended
	September 30
	2018
Beginning balance	$	13,466
Additions to sales incentive accrual	22,078
Contract payments	(21,677		)
Foreign currency fluctuations	(239		)
Ending balance	$	13,628

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

The change in the deferred revenue balance for the nine months ended September 30, 2018 was as follows:

	Nine Months Ended
	September 30
	2018
Beginning balance	$	7,787
Increase in deferred revenue representing our obligation to satisfy future performance obligations	11,032
Decrease in deferred revenue for amounts recognized in Net Sales for satisfied performance obligations	(10,475		)
Foreign currency fluctuations	(140		)
Ending balance	$	8,204

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

At September 30, 2018, $5,064 and $3,140 of deferred revenue was reported in Other Current Liabilities and Other Liabilities, respectively, on our Condensed Consolidated Balance Sheets. Of this, we expect to recognize the following approximate amounts in Net Sales in the following periods:

Remaining 2018	$	2,502
2019	2,958
2020	1,595
2021	692
2022	381
Thereafter	76
Total	$	8,204