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Equity Method Investments - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]        
Earnings from equity method investments $ 8,273 $ 21,690    
Equity method investments $ 30,312   $ 39,155  
Tinuum Group, LLC        
Schedule of Equity Method Investments [Line Items]        
Ownership interest, percent 42.50%   42.50%  
Earnings from equity method investments $ 6,438 19,767    
Equity method investments $ 24,954 40,211 $ 32,280 $ 0
Tinuum Services, LLC        
Schedule of Equity Method Investments [Line Items]        
Ownership interest, percent 50.00%      
Earnings from equity method investments $ 1,838 $ 1,922    
Equity method investments $ 5,300   $ 6,800  
Percent of losses removed from net income, attributable to noncontrolling interest 100.00%