XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.21.2

Shareholders' Equity - Additional Information (Details) - USD ($) | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Jan. 28, 2021 | Jun. 12, 2019 | Feb. 14, 2018
Class of Stock [Line Items] |  |  |  |
Minimum % of REIT taxable income to be paid as dividend annually | 90.00% |  |  |
Prospectus Supplement |  |  |  |
Class of Stock [Line Items] |  |  |  |
Maximum common stock value authorized under prospectus supplement |  | $ 300,000,000 |  |
Shares sold (in shares) | 0 |  |  |
Amended Credit Agreement |  |  |  |
Class of Stock [Line Items] |  |  |  |
Maximum borrowing capacity | $ 100,000,000.0 |  |  |
Line of Credit | Revolving Credit Facility | Amended Credit Agreement |  |  |  |
Class of Stock [Line Items] |  |  |  |
Maximum borrowing capacity |  |  | $ 900,000,000.0 | $ 900,000,000.0
Common shares | February 2018 Stock Buyback Program |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock repurchase program, authorized amount |  |  |  | $ 200,000,000.0

X
- Definition Maximum common stock value authorized under prospectus supplement. + References No definition available. + Details
Name: | geo_MaximumCommonStockValueAuthorizedUnderProspectusSupplement
Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum % of REIT taxable income (determined without regard to the dividends paid deduction and by excluding net capital gain) required to be paid out annually dividends. + References No definition available. + Details
Name: | geo_MinimumPercentOfREITTaxableIncomeToBePaidAsDividendAnnually
Namespace Prefix: | geo_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=geo_ProspectusSupplementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=geo_AmendedCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=geo_February2018StockBuybackProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |