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Stock-Based Compensation - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2020
USD ($)
compensation_plan
shares
Mar. 31, 2019
USD ($)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Number of stock-based compensation plans | compensation_plan 2  
Compensation expense | $ $ 1.3 $ 1.4
Shares available for grant (in shares) 900,000  
Nonvested awards compensation costs not yet recognized | $ $ 9.0  
Nonvested awards, compensation costs not yet recognized, period for recognition 2 years 12 days  
Restricted Stock [Member]    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Grants other than options (in shares) 398,500  
Restricted Stock Units (RSUs) [Member]    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Grants other than options (in shares) 19,000  
Performance-Based Restricted Stock Units [Member]    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Performance period 2 years  
Grants other than options (in shares) 659,301  
Target percent for PBU's used to calculate stock compensation expense (percent)   100.00%
Awards Vesting over 3 Years, Grant 1 [Member] | Restricted Stock [Member]    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Performance period 3 years