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Fair Value Measurements (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Assets:    
Cash equivalents $ 551,449 $ 500,977
Fair Value, Measurements, Recurring    
Assets:    
Cash equivalents 551,449 500,977
Restricted cash 9,062 8,537
Interest rate collar 2,670  
Liabilities:    
Interest rate collar 817 5,548
Fair Value, Measurements, Recurring | Quoted Market Prices in Active Markets (Level 1)    
Assets:    
Cash equivalents 0 0
Restricted cash 7,789 6,950
Interest rate collar 0  
Liabilities:    
Interest rate collar 0 0
Fair Value, Measurements, Recurring | Other Observable Inputs (Level 2)    
Assets:    
Cash equivalents 551,449 500,977
Restricted cash 1,273 1,587
Interest rate collar 2,670  
Liabilities:    
Interest rate collar 817 5,548
Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3)    
Assets:    
Cash equivalents 0 0
Restricted cash 0 0
Interest rate collar 0  
Liabilities:    
Interest rate collar $ 0 $ 0