Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Income tax provision on equity in earnings of affiliates	$ 868	$ 740	$ 1,035

The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining the earnings from its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied.

No definition available.

Name:	geo_IncomeTaxProvisionOnEquityInEarningsOfAffiliates
Namespace Prefix:	geo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration