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Accounts Receivable (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Reserves for sales discounts |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Reserves for sales discounts on products shipped under promotional programs | $ 19,220 | $ 18,123

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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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