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Fair Value Measurements - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2021
Jun. 30, 2021
Sep. 17, 2020
Disposal Group, Held-for-sale, Not Discontinued Operations        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Assets held for sale, purchases $ 0      
Assets held for sale, sales 0      
Assets held for sale, realized gain (loss) 0      
Assets held for sale, unrealized gain (loss) 0      
Recurring basis        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Assets held for sale $ 2,300,000 $ 2,500,000    
Control Agreements For Interest And Fee Payments        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted cash   $ 20,400,000    
Secured Debt | 8.00% senior secured notes due in 2025        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Stated interest rate percentage 8.00% 8.00% 8.00% 8.00%
Standby letter of credit facility | Secured Debt        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Letters of credit, limit, amount $ 30,000,000 $ 85,000,000    
Restricted cash   75,000,000    
Letter of credit facility, amount outstanding $ 23,600,000 $ 26,700,000