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Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Repurchase of Class A Common Stock $ 3.1    
Restricted Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted shares issued (in shares) 495,750    
Total value of grant $ 3.9    
Unrecognized expense $ 3.5    
Weighted average period 1 year 6 months    
Market Based Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted shares issued (in shares)   105,920  
Unrecognized expense $ 0.9    
Weighted average period 1 year 6 months    
Market Based Restricted Stock Units, Relative      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of target shares granted to employees (in dollars per share)   $ 11.96  
Market Based Restricted Stock Units, Absolute      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of target shares granted to employees (in dollars per share)   $ 9.50  
Class A Common Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Repurchase of Class A Common Stock (in shares) 344,827    
Repurchase of Class A Common Stock $ 2.4    
2019 Share Repurchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share repurchase program, authorized percentage of outstanding Class A Common Stock held by non-affiliates     10.00%
Stock repurchase program, number of shares authorized to be repurchased (in shares)     580,000
Stock repurchase program, authorized amount     $ 5.0
2019 Share Repurchase Plan | Class A Common Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Repurchase of Class A Common Stock (in shares) 93,063    
Repurchase of Class A Common Stock $ 0.7