Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Summary of Research, Development and Engineering Expense (Details)

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Basis of Presentation and Significant Accounting Policies - Summary of Research, Development and Engineering Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]        
Research, development and engineering $ 1,523 $ 982 $ 4,637 $ 2,762
Grants earned   (83)   (326)
Net research, development and engineering $ 1,523 $ 899 $ 4,637 $ 2,436