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Commitments and Contingencies (Details)
 3 Months Ended 6 Months Ended
Feb. 19, 2015
USD ($)
ft²
renewal_term
Jun. 30, 2015
USD ($)
ft²
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Operating Leases, Future Minimum Payments Due [Abstract]          
2015   $ 985,700   $ 985,700  
2016   2,062,000   2,062,000  
2017   1,863,800   1,863,800  
2018   1,034,800   1,034,800  
2019 and thereafter   1,949,600   1,949,600  
Total minimum lease payments   7,895,900   7,895,900  
Operating lease expense   $ 400,000 $ 300,000 800,000 $ 500,000
CALIFORNIA          
Operating Leased Assets [Line Items]          
Operating lease, additional space rented | ft²   4,000      
NEW JERSEY          
Operating Leased Assets [Line Items]          
Operating lease, rentable space | ft² 18,000        
Operating leases, monthly rental payments $ 25,000        
Operating leases, number of renewal terms | renewal_term 2        
Lessee leasing arrangements, operating leases, renewal term 5 years        
Proceeds from lease assignment $ 580,000        
Security deposit liability   $ 115,000   $ 115,000