XML 91 R144.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Investment in equity investees - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Equity Method Investments And Joint Ventures    
Share of (loss) income from equity method investments $ 43,000 $ 38,000
Carrying value of equity method Investment $ 237,081 $ 228,072