Annual report pursuant to Section 13 and 15(d)

INCOME TAXES Income (Loss) Before Income Taxes and Equity Earnings (Details)

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INCOME TAXES Income (Loss) Before Income Taxes and Equity Earnings (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
U.S. $ (12,913) $ 27,699 $ 22,631
Foreign (6,446) (3,740) 0
Income (loss) before income tax expense and equity earnings $ (19,359) $ 23,959 $ 22,631