Commitment and Contingencies (Details Textual) (USD $)	9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Revised Expiration Date [Member]	Sep. 30, 2012 Revised Value [Member]	Sep. 30, 2012 Subsequently Revised Value [Member]	Sep. 30, 2012 New Credit Facility [Member]	Sep. 30, 2012 San Diego [Member]	Jun. 24, 2011 San Diego [Member] sqft	Sep. 30, 2012 Comerica Line [Member]	Oct. 19, 2011 Comerica Line [Member]	Sep. 30, 2012 Cambridge Lease [Member] sqft	Jul. 02, 2012 Maximum [Member]	Sep. 30, 2012 Maximum [Member] San Diego [Member]	Jul. 02, 2012 Minimum [Member]	Sep. 30, 2012 Minimum [Member] San Diego [Member]
Commitment and Contingencies (Textual) [Abstract]
Addition to the tenant allowance	$ 1,500,000
Tenant allowance option exercised interest rate	9.00%
Financing Interest Expense	1,500,000
New office and laboratory space leased asset								59,199
Lease agreement period							126 months
Lease rent							192,000
Percentage of increase in lease rental payment							3.00%
Free rent allowed period													16 months		7 months
Percentage of tenant improvement allowance and an equipment allowance interest rate							9.00%
Options to extend term of lease							5 years
Prior exercised written notice to extend term of lease							12 months
Secured equipment financing to help support							3,000,000
Percentage facility fund not more than cost of pilot plant and research and development equipment							30.00%
Facility is to be paid at an interest rate							9.00%
Facility interest rate payments period							126 months
Advancement for facility							2,900,000
Company leases office space											21,000
Additional sublease income											700,000
Additional sublease income in the remainder future											200,000
Credit facilities domestic receivables and inventory revolving										3,000,000
Export-import receivables revolving line										10,000,000
Unamortized transactions costs recorded									300,000
Warrant to purchase common stock									246,212
Warrant purchase common stock per share									$ 2.64
Maintain a letter of credit	8,400,000								8,400,000
The letter of credit was subsequently reduced												3,200,000		1,600,000
Letter of credit expiration date	Dec. 31, 2012		Dec. 31, 2022						Oct. 05, 2014
Reduced restricted cash	$ 1,600,000	$ 3,200,000		$ 4,100,000	$ 2,500,000	$ 1,600,000
Letter of credit subsequently reduced, period	2012-08				2012-10