Related parties (Narrative) (Details)	Feb. 13, 2023 shares
James F. Park [Member]
Disclosure of classes of share capital held by him personally [Line Items]
Shares pledged under lending arrangements	602,400

Number of shares pledged under lending arrangement.

No definition available.

Name:	gprk_SharesPledgedUnderLendingArrangements
Namespace Prefix:	gprk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration