Assets Held For Sale - Summary of Assets and Liabilities Held-for-Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets held for sale:
Total current assets	$ 21,060	$ 0
Liabilities held for sale:
Total current liabilities	6,961	$ 0
Held-for-sale Assets
Assets held for sale:
Total current assets	8,559
Property, plant & equipment, less accumulated depreciation	12,501
Total assets held for sale	21,060
Liabilities held for sale:
Total current liabilities	944
Debt	1,924
Deferred income tax liabilities	1,473
Other liabilities	2,620
Total liabilities held for sale	6,961
Non-controlling interests	$ 7,142