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Warrants (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Jan. 16, 2018	Mar. 31, 2018	Mar. 31, 2017
Warrants (Textual)
Fair value of warrants on the issuance		$ (197)	$ 8
Loan and Security Agreement [Member] | Slipstream Communications, LLC [Member]
Warrants (Textual)
Revolving loan	$ 1,000
Interest rate per annum	8.00%
Maturity date	Jan. 16, 2019
Term of warrant	5 years
Warrant to purchase common stock	1,851,852
Price per share	$ 0.27
Fair value of warrants on the issuance	$ 266

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- Definition

The amount of revolving loan during the period.

+ References

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- Definition

Term of warrant.

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- Definition

Warrant to purchase common stock.

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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 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

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Per share or per unit amount of equity securities issued.

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