Significant Alliances and Related Parties - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Research and development expense	$ 19,525,950	$ 22,501,805	$ 22,788,887
Consultant [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	202,843	200,695	186,224
Due to related parties, current	62,059	28,245
Consultant [Member] \| Stock Based Compensation [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	164,661	32,659	109,137
Consultant [Member] \| Bonus [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	0	0	24,476
Consultant [Member] \| Accrued Bonus A Compensation Stock Option Not Yet Issued [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	66,692	24,476
Entities Affiliated with Consultant [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0	0
Research and development expense	29,607	0	0
Entities Affiliated with Consultant [Member] \| Other Income [Member]
Related Party Transaction [Line Items]
Revenue from related parties	217,347	407,395
Buffalo BioLabs [Member]
Related Party Transaction [Line Items]
Accounts payable owed	111,356
Revenue from related parties	64,362	6,500
Research and development expense	419,284
R P C I [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0	0	2,317,218
Related party transaction, expenses from transactions with related party	2,323,078	3,876,073	2,689,503
Accounts payable owed	172,295	900,300
Due to related parties, current	491,397	553,644
C C F [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	7,516	4,804	2,558
Due to related parties, current	0	0
Related party transaction, amounts of transaction	0	100,000	100,000
Royalty or sublicense royalty payments	$ 0	$ 0	$ 0

Amount for accounts payable to related parties.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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Amount of transactions with related party during the financial reporting period.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

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