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Long Term Debt - Additional Information (Detail) (USD $)
0 Months Ended 9 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended
Apr. 30, 2014
Sep. 30, 2014
Apr. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Warrants [Member]
Sep. 30, 2014
2013 [Member]
Sep. 30, 2014
2014 [Member]
Sep. 30, 2014
2015 [Member]
Sep. 30, 2014
2016 [Member]
Sep. 30, 2014
2017 [Member]
Apr. 30, 2014
Revenue Purchase Agreement [Member]
Mar. 31, 2014
Revenue Purchase Agreement [Member]
Dec. 31, 2011
Deerfield Agreement [Member]
Oct. 29, 2014
Deerfield Agreement [Member]
December 2014 [Member]
Subsequent Event [Member]
Apr. 30, 2014
Revenue Purchase Agreement [Member]
Sep. 30, 2014
Facility Agreement [Member]
Sep. 30, 2014
Facility Agreement [Member]
December 2014 [Member]
Sep. 30, 2014
Facility Agreement [Member]
December 2015 [Member]
Sep. 30, 2014
Facility Agreement [Member]
December 2016 [Member]
Sep. 30, 2014
Facility Agreement [Member]
December 2017 [Member]
Financing Arrangements [Line Items]                                        
Amount provided in funding to company                         $ 15,000,000              
Repayment of debt                           3,750,000     3,750,000 3,750,000 7,500,000  
Long term debt maturities repayment terms                                 December 2014 December 2015 December 2016  
Extended final repayment of debt                                     3,750,000 3,750,000
Interest on facility agreement                       5.75%       5.75%        
Percentage of revenue under condition one   4.25%                                    
Percentage of revenue under condition two due in year one and two           2.75% 2.75%                          
Percentage of revenue under condition three due in year three and four               2.25% 2.25% 2.25%                    
Percentage of revenue under condition four   1.00%                                    
Amount of revenue under condition one   25 and Less                                    
Amount of revenue under condition two   25 to 50                                    
Amount of revenue under condition three   50 and Above                                    
Number of common stock shares issued     450,000   550,000                              
Exercise price of warrants         $ 3.50                              
Payment for termination of agreement                             4,100,000          
Aggregate purchase price of warrants 1,575,000                                      
Common stock issued   15,702,075 450,000 11,084,119                                
Cancellation of warrants to purchase number of additional shares of common stock   100,000                                    
Additional interest obligations                     $ 0