Accrued expenses and other long-term liabilities (Details) - USD ($)	Jan. 31, 2020	Oct. 31, 2019
Accrued expenses
Wages payable	$ 1,176,000	$ 1,591,000
Accrued receipts	1,068,000	1,683,000
Warranty Liabilities	200,000	0
Deferred Revenue	404,000	0
Other accrued expenses	463,000	379,000
Totals	3,311,000	$ 3,653,000
Earn-out liability	$ 2,400,000