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Note 6 - Long-term Debt and Note Payable to Bank (Details Textual) - USD ($)		6 Months Ended
	Apr. 26, 2016	Apr. 30, 2016	Feb. 28, 2018	Feb. 28, 2017	Jan. 31, 2016	Oct. 31, 2015
North Carolina Real Estate Loan [Member]
Debt Instrument, Interest Rate, Stated Percentage		4.25%			4.25%	4.25%
Long-term Debt	$ 1,816,609	$ 1,816,609				$ 1,852,230
Virginia Real Estate Loan [Member]
Debt Instrument, Interest Rate, Stated Percentage		4.25%				4.25%
Long-term Debt	5,271,411	$ 5,271,411				$ 5,374,777
The Commercial Loan [Member] | Revolving Credit Facility [Member]
Long-term Line of Credit		6,000,000
Line of Credit Facility, Remaining Borrowing Capacity		$ 1,000,000
Revolving Credit Facility [Member] | BNC [Member] | Scenario, Forecast [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 6,000,000	$ 6,500,000
Revolving Credit Facility [Member] | BNC [Member] | Refinance Fee [Member]
Debt Issuance Costs, Net	70,000
Revolving Credit Facility [Member] | BNC [Member] | Closing Fees and Other Costs [Member]
Debt Issuance Costs, Net	$ 41,000
Revolving Credit Facility [Member] | BNC [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	3.65%
Revolving Credit Facility [Member] | BNC [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 7,000,000
Line of Credit Facility, Interest Rate at Period End		4.13%
Revolving Credit Facility [Member] | Certain Receivables Aged Ninety Days or Over [Member] | The Commercial Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Related Category Used For Calculation		85.00%
Line of Credit Facility, Maximum Borrowing Capacity, Maximum Aging of Receivables		90 days
Revolving Credit Facility [Member] | Certain Foreign Receivables [Member] | The Commercial Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Related Category Used For Calculation		35.00%
Line of Credit Facility, Maximum Amount Outstanding During Period		$ 1,000,000
Revolving Credit Facility [Member] | Certain Raw Materials of Inventory [Member] | The Commercial Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Related Category Used For Calculation		25.00%
Revolving Credit Facility [Member] | The Commercial Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 9,000,000
Long-term Line of Credit						6,000,000
Line of Credit Facility, Remaining Borrowing Capacity						2,500,000
Long-term Debt		$ 7,088,020				$ 7,227,007

X

- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Related Category Used for Calculation

+ References

No definition available.

+ Details

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- Definition

Maximum age of eligible receivables used the calculation of allowable borrowings under the terms of the facility.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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-Publisher FASB
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The effective interest rate at the end of the reporting period.

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- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

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- Definition

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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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