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Note 9 - Shareholders' Equity (Details Textual) (USD $)
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0 Months Ended | 3 Months Ended | 28 Months Ended | ||
|---|---|---|---|---|---|
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Jan. 15, 2015
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Jan. 31, 2015
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Jan. 31, 2014
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Jan. 31, 2015
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Sep. 20, 2012
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| Stockholders' Equity Note [Abstract] | |||||
| Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 320,000 | ||||
| Purchase And Retire Percentage Of Shares In Common Stock Outstanding | 4.90% | ||||
| Stock Repurchased and Retired During Period, Shares | 320,000 | ||||
| Stock Repurchased and Retired During Period, Value | $ 373,982 | $ 1,400,000 | |||
| Common Stock, Dividends, Per Share, Declared | $ 0.02 | $ 0.02 | $ 0.02 | ||
| Maximum [Member] | |||||
| Stockholders' Equity Note [Abstract] | |||||
| Stock Repurchase Program, Period in Force | 2 years | ||||
| Minimum [Member] | |||||
| Stockholders' Equity Note [Abstract] | |||||
| Stock Repurchase Program, Period in Force | 1 year | ||||
| Accounts Payable and Accrued Liabilities [Member] | |||||
| Stockholders' Equity Note [Abstract] | |||||
| Dividends Payable | $ 135,215 | ||||