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Patent Participation Fee (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2003
Asset Acquisition, Contingent Consideration		Consideration provided was $100 plus a 35% residual payable to the third party relating to the net proceeds from future licensing and/or enforcement actions from the HGI VoIP patent portfolio.
Consideration provided to the third party			$ 100us-gaap_OtherIndefiniteLivedIntangibleAssets
Patent licensing	$ 200us-gaap_LicensesRevenue

X

- Definition

Description of the calculation of the amount of contingent consideration that will be paid following receipt of proceeds.

+ References

No definition available.

+ Details

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- Definition

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date of rights not otherwise specified in the taxonomy having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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