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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
 1 Months Ended 3 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 1 Months Ended
Oct. 03, 2012
Jan. 31, 2012
Jun. 30, 2011
Sep. 30, 2013
Installment
Sep. 30, 2012
Mar. 31, 2012
Installment
Sep. 30, 2013
Significant Observable Inputs (Level 2)
Jun. 30, 2013
Significant Observable Inputs (Level 2)
Sep. 30, 2013
Omnibus Stock Incentive Plan 2009
Restricted Stock
Jun. 30, 2013
Omnibus Stock Incentive Plan 2009
Restricted Stock
Sep. 30, 2013
Equity Option
Sep. 30, 2012
Equity Option
Mar. 31, 2012
Prior To Amendment
Jul. 31, 2013
Amendment
May 31, 2013
Amendment
Dec. 31, 2012
Amendment
Jul. 12, 2012
Amendment
Mar. 13, 2012
Amendment
Sep. 30, 2013
Amendment
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]                                      
Operations previously classified as cost of goods sold, which are now being classified as part of selling, general & administrative expenses         $ 118,000                            
Anti-dilutive common stock shares excluded from computation of net income per share                     331,750 491,700              
License fee 150,000 300,000 300,000                     150,000 204,167 204,167 354,167 354,167  
Additional license fees receivable, upon achievement of certain milestones                         708,334           150,000
Additional license fees, upon achievement of certain milestones                         4,300,000           2,800,000
License fees number of annual payments       4   6                          
Royalty and licensing income       1,500,000 1,400,000                            
Royalty expenses       237,000 196,000                            
Share based compensation, common stock granted                   98,000                  
Share based compensation, vesting period                   3 years                  
Share based compensation, shares forfeited                 10,000                    
Stock based compensation       48,000 40,000                            
Fair value of forward exchange contracts asset               95,000                      
Fair value of forward exchange contracts liability             $ 359,000