Intangible Assets - Additional Information (Detail) (USD $)	6 Months Ended
Mar. 31, 2013
Expected Amortization Expense [Line Items]
Amortization period of intangible assets	12 years
Amortization of license agreements in 2013	$ 148,000
Amortization of license agreements in 2014	300,000
Amortization of license agreements in 2015	300,000
Amortization of license agreements in 2016	250,000
Amortization of license agreements in 2017	240,000
Amortization of license agreements, thereafter	$ 280,000
Licensing agreements [Member]
Expected Amortization Expense [Line Items]
Amortization period of intangible assets	4 years
Patents [Member] \| Minimum [Member]
Expected Amortization Expense [Line Items]
Amortization period of intangible assets	3 years
Patents [Member] \| Maximum [Member]
Expected Amortization Expense [Line Items]
Amortization period of intangible assets	20 years

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Amount of amortization expense expected to be recognized after the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

+ Details

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- Definition

Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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