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
Dec. 31, 2019
Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]    
Research, development and engineering $ 763 $ 866
Grants earned (141)  
Net research, development and engineering $ 622 $ 866