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Stock-Based Compensation - Additional Information (Details) - USD ($)
12 Months Ended
Mar. 04, 2020
May 17, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares available for future issuance     268,738,042    
Employee Stock Purchase Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares available for future issuance     1,819,925    
Dividend yield     3.90% 2.10% 11.30%
Number of shares authorized   2,000,000      
Plan period description     Under the ESPP, there are two six-month plan periods during each calendar year, one beginning January 1 and ending on June 30, and one beginning on July 1 and ending on December 31.    
Maximum employee subscription rate based on annual earnings, percentage   15.00%      
Maximum amount withheld by employee to purchase common stock   $ 25,000      
Purchase price of common stock, percentage   85.00%      
Number of shares sold to employees     96,788 83,287 0
Restricted Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares granted     996,037 833,448 396,705
Fair value of shares granted     $ 10,400,000    
Awards vesting period     3 years    
Shares available for future issuance     3,137,412    
Weighted-average fair value     $ 10.39 $ 11.62 $ 14.02
Total fair value of shares vesting     $ 8,600,000 $ 6,400,000 $ 6,900,000
Unrecognized compensation expense     $ 11,700,000    
Weighted average vesting period     1 year    
Number of shares forfeited     32,257    
Performance Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares granted 322,209   322,209 255,517 169,549
Weighted-average fair value     $ 15.45 $ 18.99 $ 19.30
Unrecognized compensation expense     $ 5,500,000    
Weighted average vesting period     1 year 4 months 24 days    
Performance period     3 years    
Percentage of target amount 100.00%        
Aggregate value $ 5,000,000.0        
Number of shares forfeited     132,700    
Dividend yield     0.00% 0.00% 0.00%
Performance Awards | Termination of Service          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares forfeited     0    
Performance Awards | Minimum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Percentage of target shares     0.00%    
Performance Awards | Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Percentage of target shares     200.00%    
Restricted Stock Awards, Performance-Based Awards and ESPP | General And Administrative Expense          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Compensation expense recognized during the period     $ 13,700,000 $ 10,800,000 $ 8,100,000