XML 81 R71.htm IDEA: XBRL DOCUMENT v3.21.2
FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Unrealized gain on investments $ 89,100,000       $ 89,100,000  
Gain on sale of equity investments 2,200,000          
Other than temporary impairments on equity method investments           $ 6,700,000
Goodwill impairment 0   $ 0   0 109,486,000
Impairment of long-lived assets 7,651,000   3,296,000   7,651,000 39,550,000
Restructuring and related charges:            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of right-of-use assets and leasehold improvements 7,700,000   3,300,000   7,700,000 17,200,000
Impairment of long-lived assets 7,651,000   $ 3,296,000   7,651,000 $ 17,199,000
Other equity investments            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Unrealized gain on investments $ 89,100,000       89,100,000  
Percentage of other equity investment sold 100.00%     50.00%    
Equity method investments $ 2,600,000 $ 4,200,000   $ 34,000,000    
Other than temporary impairments on equity method investments $ 0     $ 6,700,000 $ 0