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Liquidity, Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 12 Months Ended | 0 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Sep. 16, 2014 | Dec. 31, 2014 | Dec. 31, 2012 | Oct. 17, 2013
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Cash | $ 1,938,000 us-gaap_Cash | $ 2,294,000 us-gaap_Cash |  | $ 1,938,000 us-gaap_Cash | $ 2,218,000 us-gaap_Cash |
Positive working capital | 2,515,000 glow_WorkingCapital |  |  | 2,515,000 glow_WorkingCapital |  |
Restricted cash | 185,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | 242,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |  | 185,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |  |
Net loss | (2,755,000)us-gaap_NetIncomeLoss | (4,211,000)us-gaap_NetIncomeLoss |  |  |  |
Negative cash flow from operations | 1,785,000 us-gaap_NetCashProvidedByUsedInOperatingActivities | 2,300,000 us-gaap_NetCashProvidedByUsedInOperatingActivities |  |  |  |
Term loan, outstanding | 11,185,000 us-gaap_LongTermDebt | 11,185,000 us-gaap_LongTermDebt |  | 11,185,000 us-gaap_LongTermDebt |  |
Sale of common stock under sales agreement, net of expenses | 377,000 us-gaap_StockIssuedDuringPeriodValueNewIssues |  |  |  |  |
Ownership percentage in subsidiary | 100.00%glow_SubsidiaryInvesteeOwnershipPercentagebyParent |  |  | 100.00%glow_SubsidiaryInvesteeOwnershipPercentagebyParent |  |
Allowance for doubtful accounts | 54,000 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 221,000 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |  | 54,000 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |  |
Impairment charges | 2,342,000 us-gaap_AssetImpairmentCharges | 680,000 us-gaap_AssetImpairmentCharges |  |  |  |
Software and Software Development Costs [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Capitalized computer software, additions | 1,343,000 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 317,000 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember |  |  |  |
Capitalized computer software, amortization | 588,000 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 506,000 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember |  |  |  |
Impairment charges | 248,000 us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 65,000 us-gaap_AssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember |  |  |  |
Revenues [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Excise and sales taxes | 1,233,000 us-gaap_ExciseAndSalesTaxes / us-gaap_IncomeStatementLocationAxis = us-gaap_SalesMember | 1,339,000 us-gaap_ExciseAndSalesTaxes / us-gaap_IncomeStatementLocationAxis = us-gaap_SalesMember |  |  |  |
Network and Infrastructure Costs [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Excise and sales taxes | 1,197,000 us-gaap_ExciseAndSalesTaxes / us-gaap_IncomeStatementLocationAxis = glow_NetworkAndInfrastructureCostsMember | 1,283,000 us-gaap_ExciseAndSalesTaxes / us-gaap_IncomeStatementLocationAxis = glow_NetworkAndInfrastructureCostsMember |  |  |  |
Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Estimated useful life | 3 years |  |  |  |  |
Minimum [Member] | Software and Software Development Costs [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Estimated useful life | 3 years |  |  |  |  |
Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Estimated useful life | 5 years |  |  |  |  |
Maximum [Member] | Software and Software Development Costs [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Estimated useful life | 4 years |  |  |  |  |
Up-front Payment Arrangement [Member] | Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Deferred revenue, estimated recognition period | 12 months |  |  |  |  |
Up-front Payment Arrangement [Member] | Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Deferred revenue, estimated recognition period | 24 months |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Sale of common stock under sales agreement (shares) | 326 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Common Stock [Member] | At Market Issuance Sales Agreement [Member] | MLV & Co. LLC [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Stock offering, authorized amount |  |  | 8,000,000 glow_StockOfferingAuthorizedAmount / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember |  |  |
Stock offering costs, commissions (percent) |  |  | 3.00%glow_StockOfferingCostsCommissionsPercentage / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember | 3.00%glow_StockOfferingCostsCommissionsPercentage / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember |  |
Sale of common stock under sales agreement (shares) |  |  |  | 325 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember |  |
Sale of common stock, weighted-average (in dollars per share) | $ 1.28 us-gaap_SaleOfStockPricePerShare / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember |  |  | $ 1.28 us-gaap_SaleOfStockPricePerShare / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember |  |
Proceeds from sale of common stock |  |  |  | 416,000 us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_CounterpartyNameAxis = glow_MLVCo.LLCMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsidiarySaleOfStockAxis = glow_AtMarketIssuanceSalesAgreementMember |  |
Main Street Capital Corporation [Member] | Senior Secured Loan [Member] | Revolving Loan Facility [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Loan agreement, face value |  |  |  |  |  | 2,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_CreditFacilityAxis = glow_RevolvingLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember
Revolving loan facility, outstanding | 400,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = glow_RevolvingLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |  | 400,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = glow_RevolvingLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |
Revolving loan facility, unused borrowing capacity | 2,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = glow_RevolvingLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |  | 2,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = glow_RevolvingLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |
Main Street Capital Corporation [Member] | Senior Secured Loan [Member] | Term Loan Facility [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Loan agreement, face value |  |  |  |  |  | 11,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = glow_TermLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember
Term loan, outstanding | 9,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = glow_TermLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |  | 9,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = glow_TermLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |
Term loan, unused borrowing capacity | $ 1,600,000 us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount / us-gaap_DebtInstrumentAxis = glow_TermLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |  | $ 1,600,000 us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount / us-gaap_DebtInstrumentAxis = glow_TermLoanFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorLoansMember |  |

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