XML 74 R59.htm IDEA: XBRL DOCUMENT
v3.20.4

Equity Incentive Plans - Options by Exercise Price (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Options outstanding, number outstanding (in shares) | shares | 1,951
Options outstanding, Wtd. Avg. remaining contractual life | 6 years 7 months 13 days
Options outstanding, Wtd. Avg. exercise price (in dollars per share) | $ 22.07
Options exercisable, Number exercisable (in shares) | shares | 1,051
Options exercisable Wtd. Avg. Remaining Contractual Life | 5 years 1 month 17 days
Options exercisable, Wtd. Avg. exercise price (in dollars per share) | $ 24.53
0-18.23 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Lower range limit, Exercise price (in dollars per share) | 0
Upper range limit, Exercise price (in dollars per share) | $ 18.23
Options outstanding, number outstanding (in shares) | shares | 552
Options outstanding, Wtd. Avg. remaining contractual life | 7 years 6 months 3 days
Options outstanding, Wtd. Avg. exercise price (in dollars per share) | $ 14.62
Options exercisable, Number exercisable (in shares) | shares | 109
Options exercisable Wtd. Avg. Remaining Contractual Life | 8 months 26 days
Options exercisable, Wtd. Avg. exercise price (in dollars per share) | $ 14.53
18.24-22.26 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Lower range limit, Exercise price (in dollars per share) | 18.24
Upper range limit, Exercise price (in dollars per share) | $ 22.26
Options outstanding, number outstanding (in shares) | shares | 588
Options outstanding, Wtd. Avg. remaining contractual life | 6 years 1 month 13 days
Options outstanding, Wtd. Avg. exercise price (in dollars per share) | $ 20.99
Options exercisable, Number exercisable (in shares) | shares | 417
Options exercisable Wtd. Avg. Remaining Contractual Life | 5 years 7 months 17 days
Options exercisable, Wtd. Avg. exercise price (in dollars per share) | $ 20.74
22.27-29.39 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Lower range limit, Exercise price (in dollars per share) | 22.27
Upper range limit, Exercise price (in dollars per share) | $ 29.39
Options outstanding, number outstanding (in shares) | shares | 495
Options outstanding, Wtd. Avg. remaining contractual life | 6 years 6 months 18 days
Options outstanding, Wtd. Avg. exercise price (in dollars per share) | $ 25.11
Options exercisable, Number exercisable (in shares) | shares | 272
Options exercisable Wtd. Avg. Remaining Contractual Life | 5 years 2 months 19 days
Options exercisable, Wtd. Avg. exercise price (in dollars per share) | $ 27.11
29.40-50.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Lower range limit, Exercise price (in dollars per share) | 29.4
Upper range limit, Exercise price (in dollars per share) | $ 50.00
Options outstanding, number outstanding (in shares) | shares | 316
Options outstanding, Wtd. Avg. remaining contractual life | 6 years 1 month 13 days
Options outstanding, Wtd. Avg. exercise price (in dollars per share) | $ 32.27
Options exercisable, Number exercisable (in shares) | shares | 253
Options exercisable Wtd. Avg. Remaining Contractual Life | 6 years 1 month 9 days
Options exercisable, Wtd. Avg. exercise price (in dollars per share) | $ 32.27

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_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=geo_ExercisePricesRangeTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=geo_ExercisePricesRangeFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=geo_ExercisePricesRangeFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=geo_ExercisePriceRangeSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |