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Commitments and Contingencies (Details) (USD $)
 1 Months Ended 3 Months Ended 135 Months Ended
Jul. 31, 2008
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Jun. 14, 2011
sqft
Feb. 08, 2008
sqft
Commitments and Contingencies (Textual) [Abstract]            
Area of office facilities taken on lease         4,500 15,000
Lease term   5 years        
Extended lease term   3 years        
Rights to extend term   Two additional three year periods        
Allow to terminate agreement notice period   3 months        
Lease agreement payment   $ 200,000        
Tenant improvement reimbursements   593,000        
Unamortized deferred rent   8,000   8,000    
Rent expense   12,000 12,000 527,000    
Lease expiry period   2013-06        
Minimum lease payments   20,000   20,000    
Milestone payment 500,000          
Expected milestone payments upon approval 8,000,000          
Another expected milestone payments upon approval $ 5,000,000          
Minimum percentage of royalty obligation 12.50%          
Maximum percentage of royalty obligation 25.00%          
Product sales levels royalty 5.00%          
Minimum percentage of range of royalties that can be buy down 12.50%          
Maximum percentage of range of royalties that can be buy down 17.00%          
Milestone payment due period 6 months