Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Details)

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Total Gain (loss) on long-lived assets held and used   $ (20,800)
Total Gain (loss) on goodwill $ (268,000)