Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2018 and 2017 (in thousands):

Net Sales by geographic area

	Three Months Ended				Six Months Ended
	June 30				June 30
	2018		2017		2018		2017
Americas	$	178,752	$	169,146	$	341,390	$	311,916
Europe, Middle East and Africa	87,410		77,356		176,226		110,632
Asia Pacific	26,035		24,289		47,428		39,302
Total	$	292,197	$	270,791	$	565,044	$	461,850

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				Six Months Ended
	June 30				June 30
	2018		2017		2018		2017
Equipment	$	192,078	$	176,767	$	364,152	$	290,108
Parts and Consumables	57,411		52,922		114,852		95,725
Specialty Surface Coatings	7,840		7,803		14,295		14,484
Service and Other	34,868		33,299		71,745		61,533
Total	$	292,197	$	270,791	$	565,044	$	461,850

Net Sales by sales channel

	Three Months Ended				Six Months Ended
	June 30				June 30
	2018		2017		2018		2017
Sales Direct to Consumer	$	187,468	$	174,426	$	366,178	$	318,049
Sales to Distributors	104,729		96,365		198,866		143,801
Total	$	292,197	$	270,791	$	565,044	$	461,850

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

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

	Six Months Ended
	June 30
	2018
Beginning balance	$	13,466
Additions to sales incentive accrual	14,904
Contract payments	(16,785		)
Foreign currency fluctuations	(195		)
Ending balance	$	11,390

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

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

	Six Months Ended
	June 30
	2018
Beginning balance	$	7,787
Increase in deferred revenue representing our obligation to satisfy future performance obligations	7,475
Decrease in deferred revenue for amounts recognized in Net Sales for satisfied performance obligations	(6,951		)
Foreign currency fluctuations	(86		)
Ending balance	$	8,225

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

At June 30, 2018, $4,896 and $3,329 of deferred revenue 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	$	2,984
2019	3,092
2020	1,280
2021	562
2022	277
Thereafter	30
Total	$	8,225