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Schedule I - Parent Company Financial Statement (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
VAALCO ENERGY, INC. [Member]
Condensed Financial Statements, Captions [Line Items]
Minimum percent of restricted net assets	25.00%	25.00%

X

- Definition

Minimum Percent Of Retricted Net Assets

+ References

No definition available.

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Period Type:	duration

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConsolidatedEntitiesAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
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Balance Type:
Period Type: