Quarterly report pursuant to Section 13 or 15(d)

Debt - Unsecured Notes (Details)

v3.21.2
Debt - Unsecured Notes (Details) - USD ($)
$ in Thousands
Feb. 05, 2021
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2015
Debt Instrument [Line Items]        
Outstanding balance   $ 2,399,158    
2023 Notes, retired February 2021        
Debt Instrument [Line Items]        
Aggregate principal amount       $ 450,000
Outstanding balance $ 450,000 0 $ 450,000  
Repayments of debt 450,000      
Unsecured Notes, maturing April 2026        
Debt Instrument [Line Items]        
Aggregate principal amount $ 475,000      
Outstanding balance   $ 475,000 $ 0  
Interest rate 8.00%      
Percentage of principal allowed to redeem 40.00%      
Redemption price percentage 108.00%