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Investments In and Advances to Equity Method Investees - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 30, 2019
May 24, 2019
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]          
Proportionate share of losses     $ 412 $ 424  
Loss on disposal of assets     (6,447) 0  
Impairment of equity method investments     (47,133) 0  
Equity Method Investee | Services Agreements          
Schedule of Equity Method Investments [Line Items]          
Income from long-term services agreement     $ 59,900 $ 7,100  
Minimum          
Schedule of Equity Method Investments [Line Items]          
Economic interest percentage     4.00%    
Voting interest percentage     25.00%    
Maximum          
Schedule of Equity Method Investments [Line Items]          
Economic interest percentage     70.00%    
Voting interest percentage     57.00%    
Passport          
Schedule of Equity Method Investments [Line Items]          
Investment carrying value     $ 69,907   $ 70,000
Passport | Variable Interest Entity, Not Primary Beneficiary          
Schedule of Equity Method Investments [Line Items]          
Equity method investment, ownership percentage 70.00%        
Payments to acquire interest $ 70,000        
Interest in investment 30.00%        
Equity method investment, ownership percentage 57.00%        
Global Health          
Schedule of Equity Method Investments [Line Items]          
Statutory capital reserves, liquidity guaranteed by investors     300.00%    
Equity interest to be transferred     100.00%    
Investment carrying value     $ 0   $ 46,456
Global Health | Variable Interest Entity, Not Primary Beneficiary          
Schedule of Equity Method Investments [Line Items]          
Equity method investment, ownership percentage   45.00% 43.00%    
Payments to acquire interest   $ 15,000      
Equity method investment, ownership percentage   29.00%      
Business acquisition, equity interest issued or issuable, number of shares (in shares)   1,577,841      
Loss on disposal of assets   $ 9,600      
Contingent consideration, liability   $ 5,900