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Valuation and Qualifying Accounts (Schedule of Valuation and Qualifying Accounts) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reserve for sales discounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance Beginning of Year | $ 16,883 | $ 18,123 | $ 15,652
Net Charged to Costs and Expenses | 93,398 | 91,962 | 91,082
Translations, Reclassifications and Acquisitions | 15 | 39 | (48)
Net Write-Offs or Discounts Taken | (96,747) | (93,241) | (88,563)
Balance End of Year | 13,549 | 16,883 | 18,123
Reserve for inventory obsolescence |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance Beginning of Year | 8,233 | 7,194 | 6,932
Net Charged to Costs and Expenses | 4,609 | 5,711 | 3,773
Translations, Reclassifications and Acquisitions | 1,471 | 6,467 | (116)
Net Write-Offs or Discounts Taken | (2,286) | (11,139) | (3,395)
Balance End of Year | 12,027 | 8,233 | 7,194
Reserve for warranty |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance Beginning of Year | 10,249 | 4,992 | 5,335
Net Charged to Costs and Expenses | 8,466 | 8,273 | 5,815
Translations, Reclassifications and Acquisitions | 247 | 4,343 | (144)
Net Write-Offs or Discounts Taken | (9,866) | (7,359) | (6,014)
Balance End of Year | $ 9,096 | $ 10,249 | $ 4,992

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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