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Income Taxes Schedule of income (loss) before income taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
United States $ (20,758) $ (5,488) $ 15,290
Foreign (7,777) 10,646 5,358
Income before income taxes $ (28,535) $ 5,158 $ 20,648