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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
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