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Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Oct. 01, 2019
Sep. 30, 2019
Payables and Accruals [Abstract]      
Accounts payable $ 5,604   $ 13,495
Commissions 335   359
Compensation and fringe benefits 1,024   992
Professional fees and shareholders' reporting costs 368   369
Taxes, other than income 161   353
Finance lease liability 274 $ 334 334
Operating lease liability 679 $ 746  
Warranty 78   105
Other     168
Accounts Payable and Accrued Liabilities, Current, Total $ 8,523   $ 16,175