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Equity - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 4 Months Ended
May 08, 2019
Feb. 28, 2019
Feb. 28, 2017
Jan. 27, 2017
Mar. 31, 2019
Mar. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock contemplated by the Plan (in shares)       40,000,000   40,000,000    
Common stock reserved to settle claims of unsecured creditors (in shares)     7,080,000          
Shares issued to settle claims (in shares)   2,770,000            
Common stock, dividends declared (in dollars per share)   $ 0.12       $ 0.12    
Authorized amount of repurchases               $ 100,000,000
Authorized current repurchases               $ 50,000,000
Number of shares repurchased (in shares)           2,200,162    
Average price of shares repurchased (in dollars per share)           $ 11.08    
Price of shares repurchased           $ 24,375,000 $ 28,000,000  
Shares repurchased under the program (in shares)         2,648,823 2,648,823 2,648,823  
Restricted Stock Units (RSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Grants in period (in shares)         706,314      
Vesting period         3 years      
Performance-based Restricted Stock Units (PRSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Grants in period (in shares)         553,902      
Restricted Stock Units (RSUs) and Performance Shares                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Fair value of shares granted in period         $ 16,000,000      
Minimum | Performance-based Restricted Stock Units (PRSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period         2 years 2 years    
Vesting rights percentage           0.00%    
Maximum | Performance-based Restricted Stock Units (PRSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period         3 years 3 years    
Vesting rights percentage           200.00%    
Subsequent Event                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock, dividends declared (in dollars per share) $ 0.12              
Common stock                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Issuance of shares (in shares)     32,920,000