XML 57 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1
Commitments and Contingencies - Additional Information (Detail)
 12 Months Ended
Sep. 30, 2017
USD ($)
ft²
Sep. 30, 2016
USD ($)
ft²
Sep. 30, 2015
USD ($)
Other Commitments [Line Items]      
Facility rent expense $ 1,554,000 $ 926,000 $ 831,000
Provision for recorded liabilities 0    
Future commitments 11,400,000    
Technology License Commitments      
Other Commitments [Line Items]      
Milestone payments 0 $ 3,000,000 $ 1,000,000
Corporate Headquarters In Pasadena      
Other Commitments [Line Items]      
Rental expense $ 27,000    
Operating lease expiration month and year 2019-09    
Percentage of increase in annual rental cost 3.00%    
Office space leases, in square feet | ft²   8,500  
Research Facility in Madison      
Other Commitments [Line Items]      
Operating lease expiration month and year 2026-09    
Office space leases, in square feet | ft² 60,000    
Primary tenant improvement allowance accounted for as deferred rent $ 2,100,000    
Promissory note payable 2,700,000    
Rental expense including common area maintenance and real estate taxes and payments of principal and interest on the note payable $ 182,200    
Percentage of increase in annual rental cost excluding principal and interest on the note payable 2.50%    
Promissory notes payable amortized term 10 years    
Promissory note commencement date Oct. 01, 2016    
Promissory note interest rate 7.10%    
Research Facility in Middleton      
Other Commitments [Line Items]      
Rental expense $ 18,000    
Operating lease expiration month and year 2016-12