v3.10.0.1
Financial investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Financial investments [Abstract]    
Fair Value through OCI (Investment in Ten West link) $ 2,813 $ 2,088
Derivative assets 13,050 8,230
Other receivable accounts at amortized cost 35,726 34,924
Total non-current financial investments 51,589 45,242
Fair value through profit or loss 0 1,715
Contracted concessional financial assets 131,217 131,066
Other receivable accounts at amortized cost 83,931 77,357
Total current financial investments $ 215,148 $ 210,138