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Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 28, 2019
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk free interest rate 2.60%    
Expected volatility rate, minimum 40.10%    
Expected volatility rate, maximum 114.10%    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares)   1,079,150  
Shares granted, weighted average grant date fair value (in dollars per share)   $ 6.04  
RSUs, weighted average grant date fair value (in dollars per share)   $ 6.69 $ 8.83
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares)   669,550  
Shares granted, weighted average grant date fair value (in dollars per share)   $ 9.30  
RSUs, weighted average grant date fair value (in dollars per share)   $ 10.51 $ 13.75
Compensation cost not yet recognized, period for recognition   11 months 20 days  
Performance Shares | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Relative total shareholder return, percentage multiplier 0.00%    
Performance Shares | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Relative total shareholder return, percentage multiplier 200.00%    
2014 Long Term Incentive Plan | Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized to be issued under the plan (in shares)   6,400,000.0  
Grant date fair value of units granted   $ 6.5 $ 4.8
Shares granted, weighted average grant date fair value (in dollars per share)   $ 6.04 $ 8.41
Vesting date fair value of units vested   $ 4.2 $ 6.2
Unrecognized compensation expense related to unvested stock   $ 6.8  
Weighted average remaining vesting period of unrecognized compensation expense   1 year 10 days  
Stock-based compensation expense   $ 5.9 6.1
2014 Long Term Incentive Plan | Restricted Stock Units | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period   12 months  
2014 Long Term Incentive Plan | Restricted Stock Units | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period   36 months  
2014 Long Term Incentive Plan | Restricted Stock Units | Employees      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 669,550 1,005,350  
2014 Long Term Incentive Plan | Restricted Stock Units | Board of Directors      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares)   73,800  
2014 Long Term Incentive Plan | Restricted Stock Units | Class A Common Stock | Bold Contribution Agreement      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares of common stock that each holder has contingent right to receive (in shares)   1  
2014 Long Term Incentive Plan | Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   $ 2.7 $ 1.0
RSUs, weighted average grant date fair value (in dollars per share) $ 9.30    
Compensation not yet recognized, share-based awards other than options   $ 5.1