Accrued Expense - Additional Information (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Accounts Payable and Accrued Liabilities [Line Items]
Accrued expense	$ 137,662	$ 46,082
Accrued expense - related party	26,000	41,000
Management Bonus Accrual
Accounts Payable and Accrued Liabilities [Line Items]
Accrued expense	115,625
Clinical Trials
Accounts Payable and Accrued Liabilities [Line Items]
Accrued expense	10,000
Advisors and consultants	$ 9,600