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Retirement plan (Details) - USD ($)	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Retirement plan
Pension and Other Postretirement Benefit Contributions	$ 181,000	$ 159,000
Percentage Of Employee Contribution Paid	3.00%

X

- Definition

Represents the percentage of employee earnings under contribution plan.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- References

No definition available.

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X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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-Publisher FASB
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Balance Type:	debit
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