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Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]      
Allowance for doubtful accounts $ 38,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent   $ 54,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Impairment charges 125,000us-gaap_OtherAssetImpairmentCharges 101,000us-gaap_OtherAssetImpairmentCharges  
Capitalized Software Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Capitalized computer software, additions 523,000us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
428,000us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
 
Capitalized computer software, amortization (125,000)us-gaap_AdjustmentForAmortization
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
(163,000)us-gaap_AdjustmentForAmortization
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
 
Impairment charges 0us-gaap_OtherAssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
0us-gaap_OtherAssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
 
New Jersey [Member] | Property and equipment [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of long-lived assets to be disposed of 125,000us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember
/ us-gaap_StatementGeographicalAxis
= stpr_NJ
   
Pennsylvania [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment charges   225,000us-gaap_OtherAssetImpairmentCharges
/ us-gaap_StatementGeographicalAxis
= stpr_PA
 
Pennsylvania [Member] | Property and equipment [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of long-lived assets to be disposed of   101,000us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember
/ us-gaap_StatementGeographicalAxis
= stpr_PA
 
Revenues [Member]      
Finite-Lived Intangible Assets [Line Items]      
Excise and sales taxes 330,000us-gaap_ExciseAndSalesTaxes
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SalesMember
326,000us-gaap_ExciseAndSalesTaxes
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SalesMember
 
Network and Infrastructure Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Excise and sales taxes $ 309,000us-gaap_ExciseAndSalesTaxes
/ us-gaap_IncomeStatementLocationAxis
= glow_NetworkAndInfrastructureCostsMember
$ 310,000us-gaap_ExciseAndSalesTaxes
/ us-gaap_IncomeStatementLocationAxis
= glow_NetworkAndInfrastructureCostsMember
 
Minimum [Member] | Capitalized Software Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 3 years    
Minimum [Member] | Up-front Payment Arrangement [Member]      
Finite-Lived Intangible Assets [Line Items]      
Deferred revenue, estimated recognition period 12 months    
Maximum [Member] | Capitalized Software Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 4 years    
Maximum [Member] | Up-front Payment Arrangement [Member]      
Finite-Lived Intangible Assets [Line Items]      
Deferred revenue, estimated recognition period 24 months