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Note 11 - Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Sep. 30, 2020
Payroll and related $ 2,705 $ 2,545
Contract liability, current 10,187  
Accrued contract costs 89 719
Warranty reserve 143 126
Other 181 76
Total 13,305 7,880
Service [Member]    
Contract liability, current 748 731
Hardware [Member]    
Contract liability, current $ 9,439 $ 3,683