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Discontinued Operations - Discontinued Operations Assets and Liabilities (Details) - South African Distribution Business and Zambian Operations - Discontinued Operations, Held-for-sale or Disposed of by Sale - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Trade receivables, less allowance for doubtful accounts | $ 0 | $ 4,832
Inventories | 0 | 8,499
Net property | 0 | 449
Other assets | 0 | 791
Total assets | 0 | 14,571
Accounts payable | 0 | 2,745
Accrued and other liabilities | 686 | 748
Total liabilities | 686 | 3,493
Net (liabilities) assets | $ (686) | $ 11,078

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