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Revenues (Shedule of Disaggregation of Revenues) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | $ 636,080 | $ 663,237 | $ 668,362
Revenues recognized in point in time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 474,631 | 587,477 | 594,817
Revenues recognized over time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 161,449 | 75,760 | 73,545
Products [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 430,746 | 456,504 | 474,286
Products [Member] | Revenues recognized in point in time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 430,746 | 456,504 | 474,286
Services [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 205,334 | 206,733 | 194,076
Services [Member] | Revenues recognized in point in time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 43,885 | 130,973 | 120,531
Services [Member] | Revenues recognized over time [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 161,449 | 75,760 | 73,545
Americas [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 415,862 | 409,741 | 413,326
Americas [Member] | Products [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 257,119 | 251,589 | 263,212
Americas [Member] | Services [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 158,743 | 158,152 | 150,114
EMEA [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 124,967 | 147,162 | 148,279
EMEA [Member] | Products [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 98,693 | 119,151 | 123,616
EMEA [Member] | Services [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 26,274 | 28,011 | 24,663
Asia Pacific [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 95,251 | 106,334 | 106,757
Asia Pacific [Member] | Products [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 74,934 | 85,764 | 87,458
Asia Pacific [Member] | Services [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | $ 20,317 | $ 20,570 | $ 19,299

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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