Leases - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Component Of Operating Other Cost And Expense [Line Items]
Rental expenses include common area maintenance and real estate taxes			$ 16,000
Utilities costs per month			15,000
Increase in total monthly expenditures			75,000
Facility and equipment rent expense	138,000	126,000	403,000	407,000
Assets Held under Capital Leases
Component Of Operating Other Cost And Expense [Line Items]
Monthly payments under capital lease			19,000
Corporate Headquarters In Pasadena
Component Of Operating Other Cost And Expense [Line Items]
Operating lease expiration date			Aug. 31, 2019
Rental expense			22,000
Percentage of increase in annual rental cost			3.00%
Research Facility in Madison
Component Of Operating Other Cost And Expense [Line Items]
Operating lease expiration date			Feb. 28, 2019
Rental expense			$ 25,000