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Discontinued Operations - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2018
Dec. 09, 2020
Business Acquisition [Line Items]      
Proceeds from sale of business, net of cash transferred $ 558,067 $ 1,416  
Nutrisystem, Inc.      
Business Acquisition [Line Items]      
Customary indebtedness and cash adjustments     $ 558,900
Transaction costs directly related to disposition of Nutrition 11,200    
Proceeds from sale of business, net of cash transferred 550,500    
Nutrisystem, Inc. | Other Current Assets      
Business Acquisition [Line Items]      
Additional proceeds from sale of businesses after working capital adjustment $ 2,800