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Note 8 - Income Tax Provision - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Income taxes at federal statutory rate	$ 1,516	$ (94)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
State tax provision, net of federal tax benefit	$ 246	$ (41)
State tax provision, net of federal tax benefit, percentage	3.40%	9.20%
Stock options	$ (86)	$ (123)
Stock options, percentage	(1.20%)	27.50%
PPP loan forgiveness	$ (588)	$ 0
PPP loan forgiveness, percentage	(8.10%)	0.00%
Meals and entertainment	$ 1	$ 2
Meals and entertainment, percentage	0.00%	(0.40%)
Parking disallowance	$ 4	$ 5
Parking disallowance, percentage	0.10%	(1.10%)
R&D credits	$ (51)	$ (152)
R&D credits, percentage	(0.70%)	33.90%
Foreign derived intangible income	$ (15)	$ (5)
Foreign derived intangible income, percentage	(0.20%)	1.10%
ASC 740-10 Liability	$ 29	$ 27
ASC 740-10 Liability, percentage	0.40%	(6.00%)
Penalties	$ 0	$ 11
Penalties, percentage	0.00%	(2.50%)
Other	$ (20)	$ 3
Other, percentage	(0.30%)	(0.70%)
Income Tax Expense (Benefit), Total	$ 1,036	$ (367)
Percentage	14.40%	82.00%

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