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Equity Investment - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Oct. 18, 2016
Schedule of Investments [Line Items]        
Equity investment $ 130,869 $ 130,869 $ 161,503  
Matrix        
Schedule of Investments [Line Items]        
Equity method investment, ownership percentage 43.60% 43.60% 43.60% 100.00%
Impairment $ 55,056 $ 55,056    
Equity investment $ 130,869 $ 130,869 $ 161,503