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Income Taxes - Addtional Information (Detail) (USD $)	12 Months Ended
Income Taxes - Addtional Information (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Income Tax [Line Items]
Operating Loss Carryforwards	$ 8,572,639
Research & Development Tax Credits	383,067	203,288
(Increase)/Decrease in Valuation Allowance	$ 1,056,770	$ 726,118
Minimum
Income Tax [Line Items]
Operating Loss Carryforwards, Expiration Dates	2028
Maximum
Income Tax [Line Items]
Operating Loss Carryforwards, Expiration Dates	2032

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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