Intellectual Property - Summary of Intellectual Property (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2009
Intellectual Property [Line Items]
Intellectual property, net	$ 2,241,000us-gaap_FiniteLivedIntangibleAssetsNet	$ 2,741,000us-gaap_FiniteLivedIntangibleAssetsNet
Patents [Member]
Intellectual Property [Line Items]
Patents	5,000,000	5,000,000	5,000,000
Accumulated amortization	(2,759,000)	(2,259,000)
Intellectual property, net	$ 2,241,000	$ 2,741,000

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ 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 (a)(1)

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

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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