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Earnings Per Share - Dilutive (Details) - $ / shares
shares in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dilutive Earnings Per Share [Line Items]    
Earnings Per Share, Diluted $ (0.42) $ (1.56)
Earnings Per Share, Basic (0.42) $ (1.56)
Convertible Notes Due in 2019 [Member]    
Dilutive Earnings Per Share [Line Items]    
Debt Instrument, Convertible, Conversion Price $ 2.25  
Outstanding common stock equivalents 9,900