2.4.0.8161 - Disclosure - Commitments and Contingencies - Additional Information (Detail)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$eol_PE712480--1210-K0004_STD_366_20121231_0http://www.sec.gov/CIK0001366246duration2012-01-01T00:00:002012-12-31T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$eol_PE712480--1210-K0004_STD_365_20111231_0http://www.sec.gov/CIK0001366246duration2011-01-01T00:00:002011-12-31T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$eol_PE712480--1210-K0004_STD_365_20101231_0http://www.sec.gov/CIK0001366246duration2010-01-01T00:00:002010-12-31T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3gluu_CommitmentsAndContingenciesLineItemsgluu_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Commitments and Contingencies [Line Items]2false 4us-gaap_OperatingLeasesRentExpenseNetus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse27040002704USD$falsetruefalse2truefalsefalse22370002237USD$falsetruefalse3truefalsefalse26520002652USD$falsetruefalsexbrli:monetaryItemTypemonetaryRental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 false2Rent expense3false 4us-gaap_DeferredRentCreditus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse632000632falsefalsefalse2truefalsefalse223000223falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Technical Bulletin (FTB) -Number 85-3 -Paragraph 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 false2Deferred rent balance4false 4gluu_ExpiryPeriodOfOperatingLeaseObligationsgluu_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Various expiration dates through January 2018falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringExpiry Period Of Operating Lease ObligationsNo definition available.false0Operating facility leases expiration period description5false 5gluu_IncomeTaxLiabilitiesNotExpectedToBecomeDuegluu_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse0012 monthsfalsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaIncome tax liabilities not expected to become due.No definition available.false0Income tax liabilities not expected to become due6false 5gluu_LiabilitiesRecordedOnIndemnificationAgreementsgluu_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00USD$falsetruefalse2truefalsefalse00USD$falsetruefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryLiabilities recorded on indemnification agreements.No definition available.false2Liabilities recorded for indemnification agreementsfalseCommitments and Contingencies - Additional Information (Detail) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.glu.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation36