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Fair Value Measurement - Assets (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Operating lease right-of-use assets $ 499,801
Long-lived assets held for use, total gain (loss) 1,200
Operating lease right-of-use assets, total gain (loss) (1,100)
Level 1 | Fair value measured on a nonrecurring basis  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-lived assets held for use, fair value measurements 1,684
Long-lived assets held for use, total gain (loss) 1,190
Level 3 | Fair value measured on a nonrecurring basis  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Operating lease right-of-use assets 611
Operating lease right-of-use assets, total gain (loss) $ (1,144)