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Loss Per Share - Narrative (Details)
shares in Thousands
9 Months Ended
Sep. 30, 2019
$ / shares
shares
Second Lien Notes  
Dilutive Earnings Per Share [Line Items]  
Debt conversion price (in dollars per share) $ 3.77
Outstanding common stock equivalents (in shares) | shares 50,500
Minimum | 5.00% / 7.00% Second Lien Notes due August 31, 2022  
Dilutive Earnings Per Share [Line Items]  
Stated interest rate (as a percent) 5.00%
Maximum | 5.00% / 7.00% Second Lien Notes due August 31, 2022  
Dilutive Earnings Per Share [Line Items]  
Stated interest rate (as a percent) 7.00%
Convertible Debt | 5.00% / 7.00% Second Lien Notes due August 31, 2022  
Dilutive Earnings Per Share [Line Items]  
Debt conversion price (in dollars per share) $ 3.77
Convertible Debt | Minimum | 5.00% / 7.00% Second Lien Notes due August 31, 2022  
Dilutive Earnings Per Share [Line Items]  
Stated interest rate (as a percent) 5.00%
Convertible Debt | Maximum | 5.00% / 7.00% Second Lien Notes due August 31, 2022  
Dilutive Earnings Per Share [Line Items]  
Stated interest rate (as a percent) 7.00%