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Note 13 - Term Loan, Line of Credit and PPP loans (Details Textual)		1 Months Ended		9 Months Ended
	May 01, 2020 USD ($)	Feb. 28, 2022 USD ($)	May 31, 2020 USD ($)	Jul. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)	Feb. 25, 2022 USD ($)
Paycheck Protection Program CARES Act [Member]
Term Loan	$ 2,800,000		$ 2,800,000
Term Loan [Member]
Debt Instrument, Interest Rate, Stated Percentage		3.76%
Long-Term Debt, Gross				$ 16,192,000
Term Loan				$ 17,000,000	$ 0
Revolving Credit Facility [Member]
Debt Instrument, Basis Spread on Variable Rate		2.00%
Bank of America, N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 3,000,000.0
Debt Instrument, Face Amount		$ 17,000,000.0				$ 17,000,000
Debt Instrument, Covenant, Maximum EBITDA Ratio				3.00
Debt Instrument, Covenant, Fixed Charge Coverage Ratio				1.25
Dent Instrument, Covenant Required Ebitda				$ 600,000

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- Definition

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+ References

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- Definition

Represent the required EBITDA by a covenant.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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