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Note 15 - Shareholders' Equity (Details Textual) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 02, 2021 shares | Oct. 28, 2011 $ / shares shares | Oct. 31, 2022 shares | Jul. 14, 2015 shares
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  | 400,000
Purchase And Retire Percentage Of Shares In Common Stock Outstanding |  |  |  | 6.00%
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares) |  |  | 398,400 |
Common Stock Dividends, Rights Per Share (in shares) | 1 | 1 |  |
Minimum Percentage of Stock Owner in Stockholder Protection Rights Agreement |  | 15.00% |  |
Preferred Stock, Exercise Price (in dollars per share) | $ / shares |  | $ 25 |  |
Preferred Stock, Number of Votes |  | 1,000 |  |
Preferred Stock, Dividend Rate, Common Stock Dividend Amount Multiplier |  | 1,000 |  |
Preferred Stock, Redemption Price Per Share (in dollars per share) | $ / shares |  | $ 0.0001 |  |
Preferred Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  | 100,000 |
Minimum [Member] |  |  |  |
Stock Repurchase Program, Period in Force (Month) |  |  | 24 months |
Maximum [Member] |  |  |  |
Stock Repurchase Program, Period in Force (Month) |  |  | 36 months |

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