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v2.4.1.9

Accrued Sales Taxes and Regulatory Fees (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Accrued Sales Taxes and Regulatory Fees [Roll Forward] |  |
Accrued sales taxes and regulatory fees | $ 444 glow_AccruedSalesTaxesAndRegulatoryFees | $ 590 glow_AccruedSalesTaxesAndRegulatoryFees

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- Definition Accrued Sales Taxes and Regulatory Fees + References No definition available. + Details
Name: | glow_AccruedSalesTaxesAndRegulatoryFees
Namespace Prefix: | glow_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | glow_AccruedSalesTaxesAndRegulatoryFeesRollForward
Namespace Prefix: | glow_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration