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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, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Reserve for sales discounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance Beginning of Year | $ 15,652 | $ 13,488 | $ 15,094
Net Charged to Costs and Expenses | 91,082 | 82,724 | 77,126
Translations, Reclassifications and Acquisitions | (48) | 166 | (109)
Net Write-Offs or Discounts Taken | (88,563) | (80,726) | (78,623)
Balance End of Year | 18,123 | 15,652 | 13,488
Reserve for inventory obsolescence |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance Beginning of Year | 6,932 | 7,262 | 9,675
Net Charged to Costs and Expenses | 3,773 | 3,007 | 2,041
Translations, Reclassifications and Acquisitions | (116) | 886 | 295
Net Write-Offs or Discounts Taken | (3,395) | (4,223) | (4,749)
Balance End of Year | 7,194 | 6,932 | 7,262
Reserve for warranty |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance Beginning of Year | 5,335 | 5,262 | 5,566
Net Charged to Costs and Expenses | 5,815 | 7,224 | 7,867
Translations, Reclassifications and Acquisitions | (144) | 567 | (49)
Net Write-Offs or Discounts Taken | (6,014) | (7,718) | (8,122)
Balance End of Year | $ 4,992 | $ 5,335 | $ 5,262

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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) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + 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) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in 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) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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