Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2008	Dec. 31, 2011
Product Liability Contingency [Line Items]
Estimates reimbursable past patent expenses	$ 75,000
Patent expense per quarter	25,000
Purchase commitment amount paid	100,000
Payment to purchase raw materials and supplies		608,440
Accrued expense - related party			26,000
Other inventory, gross	195,000		153,000
Drug Product Testing Agreement Consideration To Be Paid In Stages	340,000
Patented Technology
Product Liability Contingency [Line Items]
Accounts payable and accrued liabilities	$ 108,582