Annual report pursuant to Section 13 and 15(d)

Commitments And Contingencies (Estimated Obligations And Companies Share For The Annual Charter Payment) (Details)

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Commitments And Contingencies (Estimated Obligations And Companies Share For The Annual Charter Payment) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2016
Estimated obligation and company share for annual charter payment    
Annual charter payment, Total   $ 5,100
VAALCO ENERGY, INC. [Member]    
Estimated obligation and company share for annual charter payment    
Annual charter payment, 2018 $ 9,719  
Annual charter payment, 2019 9,719  
Annual charter payment, 2020 7,029  
Annual charter payment, Total 26,467  
Full Charter Payment [Member]    
Estimated obligation and company share for annual charter payment    
Annual charter payment, 2018 31,294  
Annual charter payment, 2019 31,294  
Annual charter payment, 2020 22,634  
Annual charter payment, Total $ 85,222