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Equity - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Mar. 31, 2020
Dec. 31, 2018
Feb. 28, 2018
Stockholders Equity Note [Line Items]            
Net proceeds from issuance of common stock $ 21,944,000 $ 5,881,000 $ 450,710,000      
Amount of shares repurchased during period 0 $ 21,659,000 $ 0      
Share Repurchase Plan, February 2018            
Stockholders Equity Note [Line Items]            
Stock repurchase program, authorized amount           $ 100,000,000
Shares repurchased during period (in shares)   3,047,335        
Amount of shares repurchased during period   $ 22,000,000        
Stock repurchase program, remaining authorized repurchase amount $ 78,000,000          
Convertible debt securities            
Stockholders Equity Note [Line Items]            
Securities excluded in the calculation of diluted earnings per share 31,306,089          
Equity awards            
Stockholders Equity Note [Line Items]            
Securities excluded in the calculation of diluted earnings per share 18,736 12,622 10,051      
ATM Offerings | Common Stock            
Stockholders Equity Note [Line Items]            
Aggregate value of common stock issuable       $ 175,000,000 $ 150,000,000  
Issuance of common stock (in shares) 1,578,554 129,500        
Net proceeds from issuance of common stock $ 20,000,000 $ 2,000,000        
Outstanding for future offerings, amount 90,000,000          
Direct Stock Purchases and Dividend Reinvestment Plan | Common Stock            
Stockholders Equity Note [Line Items]            
Net proceeds from issuance of common stock $ 1,000,000          
Remaining shares outstanding for future offerings (in shares) 6,000,000          
Common Stock            
Stockholders Equity Note [Line Items]            
Issuance of common stock (in shares) 2,503,662 350,088 28,724,645      
Direct stock purchase and dividend reinvestment plan (in shares) 119,040 0 399,838      
Shares repurchased during period (in shares) 0 3,047,335 0      
Amount of shares repurchased during period $ 0 $ 30,000 $ 0