Commitments And Contingencies (Estimated Obligations And Companies Share For The Annual Charter Payment) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
VAALCO ENERGY, INC.
Estimated obligation and company share for annual charter payment
Annual charter payment, 2019	$ 9,718
Annual charter payment, 2020	7,029
Annual charter payment, Total	16,747
Full Charter Payment [Member]
Estimated obligation and company share for annual charter payment
Annual charter payment, 2019	31,294
Annual charter payment, 2020	22,634
Annual charter payment, Total	$ 53,928