Discontinued Operations - Related to Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net (income) loss	$ (836)	$ 390	$ (2,006)	$ 1,075
Discontinued Operations, Held-for-sale or Disposed of by Sale | South African Distribution Business and Zambian Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Income) loss from continuing operations	(836)	588	(1,496)	1,109
(Income) loss from discontinued operations	0	(198)	(510)	(34)
Net (income) loss	$ (836)	$ 390	$ (2,006)	$ 1,075