Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

v3.21.4
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Sep. 30, 2020
Operating Loss Carryforwards [Line Items]    
Valuation allowance $ 12,467 $ 10,042
Operating loss carryforwards 16,600  
Operating loss carryforwards, amount with limitations 44,000  
Operating loss carryforwards, amount available for future use 47,000  
Operating loss carryforwards, amount without limitations 4,400  
Operating loss carryforwards, amount expected to expire 1,500  
Tax Year 2022    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 42,200  
Research Tax Credit Carryforward    
Operating Loss Carryforwards [Line Items]    
Tax credit carryforward, amount expected to expire 112  
Domestic Tax Authority    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 47,000  
Operating loss carryforwards, without expiration dates 33,000  
State and Local Jurisdiction    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards $ 62,600