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v2.4.1.9

Debt (Narrative) (Details) (USD $) | 12 Months Ended | 0 Months Ended | 1 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Oct. 17, 2013 | Feb. 28, 2014 | Mar. 01, 2015
Debt Instrument [Line Items] |  |  |  |  |
Deferred financing costs |  | $ 363,000 us-gaap_DeferredFinanceCostsNet |  |  |
Amortization of financing costs | 89,000 us-gaap_AmortizationOfFinancingCosts | 976,000 us-gaap_AmortizationOfFinancingCosts |  |  |
Amortization of debt discount | 0 us-gaap_AmortizationOfDebtDiscountPremium | 727,000 us-gaap_AmortizationOfDebtDiscountPremium |  |  |
Gain on restructured promissory note | 0 glow_ForgivenessofInterestExpense | 103,000 glow_ForgivenessofInterestExpense |  |  |
Current portion of long-term debt | 400,000 us-gaap_LongTermDebtCurrent | 950,000 us-gaap_LongTermDebtCurrent |  |  |
Interest Expense [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amortization of financing costs |  | 710,000 us-gaap_AmortizationOfFinancingCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember |  |  |
Amortization of debt discount |  | 619,000 us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember |  |  |
Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Deferred financing costs | 84,000 us-gaap_DeferredFinanceCostsNet / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember |  |  |  |
Other Assets [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Deferred financing costs | 192,000 us-gaap_DeferredFinanceCostsNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember |  |  |  |
Comerica Term Loan [Member] | Principal payment terms, period 1 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Excess cash flow (percent) |  |  | 33.00%glow_DebtInstrumentPrincipalPaymentPercentageOfExcessCashFlow / us-gaap_DebtInstrumentAxis = glow_ComericaTermLoanMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember |  |
Comerica Term Loan [Member] | Principal payment terms, period 2 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Excess cash flow (percent) |  |  | 50.00%glow_DebtInstrumentPrincipalPaymentPercentageOfExcessCashFlow / us-gaap_DebtInstrumentAxis = glow_ComericaTermLoanMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember |  |
Note with SRS [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate percentage | 10.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  | 10.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Note payable, face value | 1,785,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember | 1,885,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |
Debt instrument, periodic payment, principal | 50,000 us-gaap_DebtInstrumentPeriodicPaymentPrincipal / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Number of principal payments | 2 glow_DebtInstrumentNumberofInstallmentPayments / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Note payable, total of periodic principal payments | 100,000 us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Note with SRS [Member] | Promissory Note [Member] | Subsequent Event [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate percentage |  |  |  |  | 15.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Note with SRS [Member] | Principal payment terms, period 1 [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, periodic payment, principal | 50,000 us-gaap_DebtInstrumentPeriodicPaymentPrincipal / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Debt instrument, additional periodic payment, principal, earnings benchmark, measurement period | 3 months |  |  |  |
Debt covenant, additional principal payments, adjusted base EBITDA | 1,500,000 glow_DebtInstrumentAdditionalPeriodicPaymentPrincipalReductionToCalculatedPayment / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Note with SRS [Member] | Principal payment terms, period 2 [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, additional periodic payment, principal, earnings benchmark, measurement period | 6 months |  |  |  |
Debt covenant, additional principal payments, adjusted base EBITDA | 3,000,000 glow_DebtInstrumentAdditionalPeriodicPaymentPrincipalReductionToCalculatedPayment / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Debt covenant, additional principal payments, adjusted base EBITDA (percent) | 40.00%glow_DebtInstrumentAdditionalPeriodicPaymentPrincipalPercentOfEarningsBenchmark / us-gaap_DebtInstrumentAxis = glow_PromissoryNoteWithStockholderRepresentativeMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |
Amended note with Stockholder Representative [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Note payable, face value |  | 1,885,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = glow_AmendedNotewithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |
Decrease in face amount of debt instrument |  |  |  | (203,000)glow_DebtInstrumentIncreaseDecreaseinFaceAmount / us-gaap_DebtInstrumentAxis = glow_AmendedNotewithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Amended note with Stockholder Representative [Member] | General and Administrative Expenses [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Decrease in face amount of debt instrument |  |  |  | (40,000)glow_DebtInstrumentIncreaseDecreaseinFaceAmount / us-gaap_DebtInstrumentAxis = glow_AmendedNotewithStockholderRepresentativeMember / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Amended note with Stockholder Representative [Member] | Other Income [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Gain on restructured promissory note |  |  |  | 103,000 glow_ForgivenessofInterestExpense / us-gaap_DebtInstrumentAxis = glow_AmendedNotewithStockholderRepresentativeMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Amended note with Stockholder Representative [Member] | Accrued Expenses [Member] | Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Decrease in face amount of debt instrument |  |  |  | 60,000 glow_DebtInstrumentIncreaseDecreaseinFaceAmount / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_DebtInstrumentAxis = glow_AmendedNotewithStockholderRepresentativeMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Term Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate percentage |  |  | 12.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_CreditFacilityAxis = glow_TermLoanMember |  |
Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate percentage |  |  | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Main Street Capital Corporation [Member] | Term Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving loan facility, maximum borrowing capacity |  |  | 11,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = glow_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |
Proceeds from credit facility |  |  | 9,000,000 us-gaap_ProceedsFromLongTermLinesOfCredit / us-gaap_CreditFacilityAxis = glow_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |
Loans payable to bank | 9,000,000 us-gaap_LoansPayableToBank / us-gaap_CreditFacilityAxis = glow_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember | 9,000,000 us-gaap_LoansPayableToBank / us-gaap_CreditFacilityAxis = glow_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |  |
Note payable, total of periodic principal payments | 0 us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal / us-gaap_CreditFacilityAxis = glow_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |  |  |
Main Street Capital Corporation [Member] | Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving loan facility, maximum borrowing capacity |  |  | 2,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |
Proceeds from credit facility |  |  | 400,000 us-gaap_ProceedsFromLongTermLinesOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |
Loans payable to bank | 400,000 us-gaap_LoansPayableToBank / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember | 300,000 us-gaap_LoansPayableToBank / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |  |
Proceeds from revolving credit facility | 249,000 us-gaap_ProceedsFromLinesOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |  |  |
Note payable, total of periodic principal payments | $ 149,000 us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = glow_MainStreetCapitalCorporationMember |  |  |  |

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- Definition Debt Instrument, Additional Periodic Payment, Principal, Earnings Benchmark, Measurement Period + References No definition available. + Details
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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 + Details
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- Definition Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 8 -Article 9 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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