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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Jan. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Subsequent Event        
Schedule of Equity Method Investments [Line Items]        
Government Grant Income $ 3,000      
Government Assistance C A R E S Act        
Schedule of Equity Method Investments [Line Items]        
Government Grant Income   $ 32,913 $ 0 $ 0
Government Assistance C A R E S Act | Other nonoperating income (expense)        
Schedule of Equity Method Investments [Line Items]        
Government Grant Income   16,198 0 0
Government Assistance C A R E S Act | Equity income (loss) from unconsolidated joint ventures        
Schedule of Equity Method Investments [Line Items]        
Government Grant Income   1,279 0 0
Government Assistance C A R E S Act | Income (loss) From Discontinued Operations        
Schedule of Equity Method Investments [Line Items]        
Government Grant Income   $ 15,436 $ 0 $ 0