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Discontinued Operations - Discontinued Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Loss from discontinued operations, net of tax | $ 0 | $ 0 | $ (245)
South African Distribution Business and Zambian Operations | Discontinued Operations, Held-for-sale or Disposed of by Sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Net sales |  |  | 5,261
Cost of products sold |  |  | 4,819
Selling, general and administrative |  |  | 937
Restructuring and other charges |  |  | 0
Currency exchange losses, net |  |  | 18
Other income, net |  |  | 596
Income from discontinued operations before income taxes |  |  | 83
Provision for income taxes |  |  | 328
Loss from discontinued operations, net of tax |  |  | $ (245)

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