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Note 10 - Accrued and Other Liabilities - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Sep. 30, 2022
Payroll and related $ 2,155 $ 3,003
Deferred revenue 4,596  
Accrued contract costs 454 809
Warranty reserve 159 159
Canadian goods and services and harmonized sales tax payable 0 1,556
Asset purchase holdback liability 701 0
Other 10 5
Total 8,075 12,083
Service [Member]    
Deferred revenue 1,585 1,827
Hardware [Member]    
Deferred revenue $ 3,011 $ 4,724