VAALCO Energy, Inc. Annual report pursuant to Section 13 and 15(d)

Supplemental Information on Oil and Gas Producing Activities (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
United States [Member]
Results of Operations for Oil and Gas Producing Activities:
Crude oil and gas sales	$ 2,798	$ 1,655	$ 126
Production, G&A and other expense	(47,866)	(7,413)	(495)
Depreciation, depletion and amortization	(3,872)	(1,922)	(11)
Income tax			(7)
Results from oil and gas producing activities	(48,940)	(7,680)	(387)
International [Member]
Results of Operations for Oil and Gas Producing Activities:
Crude oil and gas sales	192,489	208,781	134,346
Production, G&A and other expense	(27,425)	(27,471)	(28,614)
Depreciation, depletion and amortization	(15,954)	(23,604)	(19,946)
Income tax	(81,813)	(93,468)	(35,260)
Results from oil and gas producing activities	$ 67,297	$ 64,238	$ 50,526