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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 |
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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 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
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