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Accounts payable and accrued expenses, and Other noncurrent liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Sep. 30, 2020
Product Warranties    
Accounts payable $ 11,271 $ 5,604
Commissions 305 335
Compensation and fringe benefits 1,233 1,024
Professional fees and shareholders' reporting costs 300 368
Taxes, other than income 136 161
Finance lease liability 47 274
Operating lease liability 569 679
Warranty 67 78
Accounts payable and accrued expenses $ 13,928 $ 8,523