Accrued Expense - Additional Information (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Accounts Payable and Accrued Liabilities [Line Items]
Accrued expense	$ 153,541	$ 137,662
Accrued expense - related party	15,000	26,000
Management Bonus Accrual
Accounts Payable and Accrued Liabilities [Line Items]
Accrued expense	138,750
Clinical Trials
Accounts Payable and Accrued Liabilities [Line Items]
Accrued expense	8,000
Advisors and consultants	$ 5,500