Equity incentive plan (Details) - USD ($)	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Equity incentive plan (Details) [Line Items]
Aggregate intrinsic value of options expected to vest	$ 5,000	$ 5,000
Aggregate intrinsic value of options exercisable	1,200,000
Exercised price	$ 1,226,000
Equity Incentive Plan [Member]
Equity incentive plan (Details) [Line Items]
Increase in number of shares authorized (in Shares)	442,060
Employee Stock Option [Member]
Equity incentive plan (Details) [Line Items]
Aggregate intrinsic value of options expected to vest	$ 81,000
Unrecognized compensation cost	$ 7,000
Unrecognized compensation cost, recognition period	4 months 24 days
Aggregate intrinsic value of options exercisable	$ 17,000
Exercised price	$ 112,900