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Note 6 - Long-term Debt and Note Payable to Bank (Details Textual) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
|
Jan. 31, 2015
|
Oct. 31, 2014
|
| North Carolina Real Estate Loan [Member] |
|
|
| Debt Disclosure [Abstract] |
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
4.25% |
4.25% |
| Virginia Real Estate Loan [Member] |
|
|
| Debt Disclosure [Abstract] |
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
4.25% |
4.25% |
| Revolving Credit Facility [Member] | The Commercial Loan [Member] |
|
|
| Debt Disclosure [Abstract] |
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
9.0 |
|
| Line of Credit Facility, Interest Rate at Period End |
2.37% |
|
| Long-term Line of Credit |
3.0 |
2.5 |
| Line of Credit Facility, Remaining Borrowing Capacity |
5.8 |
6.5 |
| Revolving Credit Facility [Member] | The Commercial Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
|
| Debt Disclosure [Abstract] |
|
|
| Debt Instrument, Basis Spread on Variable Rate |
2.20% |
|
| Revolving Credit Facility [Member] | The Commercial Loan [Member] | Certain Foreign Receivables [Member] |
|
|
| Debt Disclosure [Abstract] |
|
|
| 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 |
1.0 |
|
| Revolving Credit Facility [Member] | The Commercial Loan [Member] | Certain Raw Materials of Inventory [Member] |
|
|
| Debt Disclosure [Abstract] |
|
|
| Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Related Category Used For Calculation |
25.00% |
|
| Revolving Credit Facility [Member] | The Commercial Loan [Member] | Certain Receivables Aged Ninety Days or Over [Member] |
|
|
| Debt Disclosure [Abstract] |
|
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| 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 |
|