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Financial Instruments (Details Textual) (MCFs Non Recourse Debt [Member], USD $) In Millions, unless otherwise specified | Jan. 01, 2012
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MCFs Non Recourse Debt [Member] |
Financial Instruments (Textual) [Abstract] |
Principal amount of guaranteed investment related to debt service reserve fund | $ 23.9
Guaranteed investment related to bond fund payment | $ 9.9

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- Details
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Namespace Prefix: | geo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Guaranteed investment related to bond fund payment. + References No definition available. + Details
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Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Principal amount of guaranteed investment related to debt service reserve fund. + References No definition available. + Details
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Namespace Prefix: | geo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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