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Share-Based Compensation - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Capitalized share-based compensation costs $ 0 $ 0 $ 0  
Repurchase of common stock for employee tax withholding obligations amount $ 3,046,000 1,209,000 2,119,000  
Restricted Stock        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Award vesting period 3 years      
2017 Plan        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Useful Term of the plan 10 years      
Common stock shares issuable       1,750,000
Shares available for grant 1,584,154      
2007 Plan        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Award vesting period 3 years      
2007 Plan | Performance Unit Incentive Plan (“PUP”)        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Awards with grant date fair value during the period $ 4,300,000      
Stock value payable 1,700,000      
Liability awards recorded 5,300,000 7,000,000.0    
Payments to employees 5,600,000 $ 5,900,000 $ 3,700,000  
Paid to employees as shares $ 3,400,000      
Repurchase of common stock for employee tax withholding obligations amount, shares 25,771      
Repurchase of common stock for employee tax withholding obligations amount $ 1,500,000      
2007 Plan | Restricted Stock        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Repurchase of common stock for employee tax withholding obligations amount, shares 24,995 22,358 41,532  
Repurchase of common stock for employee tax withholding obligations amount $ 1,500,000 $ 1,200,000 $ 2,100,000  
Grant date fair value of restricted stock vested 2,800,000 2,100,000 2,700,000  
Unamortized cost $ 2,500,000      
Recognition period of unrecognized cost 1 year 1 month 6 days      
2007 Plan | Restricted Stock Units        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Payments to employees $ 600,000 200,000 300,000  
Liabilities related to restricted stock 400,000 400,000    
Payments to employees in shares 200,000      
2007 Plan | Stock Options        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total intrinsic value of stock options outstanding $ 2,100,000 2,000,000.0 2,500,000  
2007 Plan | Stock Options | Maximum        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Weighted average remaining contractual life 1 year      
Restructuring Charges        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation before income tax benefit $ 100,000 $ 0 $ 100,000