Licenses, Patents, and Technology - Additional Information (Detail) (License Agreement [Member], USD $)	12 Months Ended
Dec. 31, 2008	Sep. 30, 2012
License Agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Total initial license payment for certain technology	$ 200,000
Future license payments upon obtaining certain milestones	100,000
License agreement payable		$ 64,000

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

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetsAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration