CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Cash flows from Operating Activities:
Net loss	$ (2,755)us-gaap_NetIncomeLoss	$ (4,211)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	2,735	2,860
Bad debt (recovery) expense	(131)glow_BadDebtExpense	149glow_BadDebtExpense
Amortization of deferred financing costs	89us-gaap_AmortizationOfFinancingCosts	976us-gaap_AmortizationOfFinancingCosts
Amortization of debt discount	0	727
Stock-based compensation	600us-gaap_ShareBasedCompensation	1,203us-gaap_ShareBasedCompensation
Gain on debt forgiveness	0	(103)
Impairment charges	2,089	680
Increase (decrease) attributable to changes in assets and liabilities:
Accounts receivable	935	(179)
Prepaid expenses and other current assets	(621)	493
Other assets	71	214
Accounts payable	(726)	(499)
Accrued expenses and other liabilities	(497)	(78)
Accrued sales taxes and regulatory fees	(146)	68
Deferred tax liability	142	0
Net cash provided by operating activities	1,785	2,300
Cash flows from Investing Activities:
Proceeds from sale of equipment	4	2
Cash paid for acquisition costs	0	(46)
Purchases of property and equipment	(2,176)	(856)
Net cash used in investing activities	(2,172)	(900)
Cash flows from Financing Activities:
Cost of preferred stock exchange	(5)	(289)
Principal payments for capital lease	(216)	(251)
Proceeds from new credit facility, net of expenses of $322	0	8,978
Repayment of former debt obligations and expenses of $482	0us-gaap_RepaymentsOfDebt	(9,762)us-gaap_RepaymentsOfDebt
Principal payments under borrowing arrangements	(249)us-gaap_RepaymentsOfLongTermDebt	0us-gaap_RepaymentsOfLongTermDebt
Advances on borrowing arrangements	249	0
Proceeds from issuance of common stock	416us-gaap_ProceedsFromRepurchaseOfEquity	0us-gaap_ProceedsFromRepurchaseOfEquity
Payment of equity issuance costs	(39)us-gaap_PaymentsOfStockIssuanceCosts	0us-gaap_PaymentsOfStockIssuanceCosts
Payment of debt issuance costs	(59)us-gaap_PaymentsOfDebtIssuanceCosts	0us-gaap_PaymentsOfDebtIssuanceCosts
Purchase of treasury stock	(66)	0
Net cash provided by (used in) financing activities	31	(1,324)
Increase (decrease) in cash and cash equivalents	(356)	76
Cash at beginning of year	2,294us-gaap_Cash	2,218us-gaap_Cash
Cash at end of year	1,938us-gaap_Cash	2,294us-gaap_Cash
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	1,330us-gaap_InterestPaid	1,200us-gaap_InterestPaid
Non-cash investing and financing activities:
Accrued capital expenditure	81	0
Acquisition of equipment under capital lease	0	38
Preferred stock exchange and conversion	0	10,000
Common stock issued in connection with debt amendment	0	148
Common stock issued to broker in connection with preferred stock exchange	0	135
Accrued preferred stock dividends	20glow_AccruedStockDividends	20glow_AccruedStockDividends
Restricted stock issued to settle accrued 2013 bonuses [Member]
Non-cash investing and financing activities:
Other Significant Noncash Transaction, Value of Consideration Given	$ 165	$ 0

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond 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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- Definition

The net cash inflow or outflow resulting from the entity's share transaction.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The cash inflow from sale of machinery and equipment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt and payment of capital lease obligations.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for debt initially having maturity 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 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

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- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

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- Details

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