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Revenue from Contracts with Customers (Tables) | 3 Months Ended
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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 |

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- Definition Tabular disclosure of revenue recognized in the aggregate and for each of the five succeeding fiscal years for future performance obligations satisfied for which consideration from customer has been received or is due for each of the five succeeding fiscal years as of the balance sheet date. + References No definition available. + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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