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Share-Based Compensation - Narrative (Details) - $ / shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Apr. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options granted (in shares) 1,506,848 1,406,681  
Weighted average fair value (in dollars per share) $ 1.09 $ 1.55  
Chief Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options granted (in shares) 6,848 885,173  
Omnibus Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized for issuance (in shares) 5,000,000   1,500,000