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Note 16 - Stock-based Compensation Plans (Details) - Summary of Nonvested Share Activity - $ / shares | 12 Months Ended
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Jan. 31, 2016 | Jan. 31, 2015
Note 16 - Stock-based Compensation Plans (Details) - Summary of Nonvested Share Activity [Line Items] |  |
Granted |  | 215,000
Granted |  | $ 3.47
Shareholder-Approved Stock Option Plan [Member] |  |
Note 16 - Stock-based Compensation Plans (Details) - Summary of Nonvested Share Activity [Line Items] |  |
Number of Stock Options Outstanding | 123,854 | 164,145
Weighted- Average Grant-Date Fair Value per Share | $ 2.56 | $ 2.21
Granted |  | 40,000
Granted |  | $ 3.43
Vested | (70,276) | (73,840)
Vested | $ 1.92 | $ 1.97
Forfeited |  | (6,451)
Forfeited |  | $ 1.96
Number of Stock Options Outstanding | 53,578 | 123,854
Weighted- Average Grant-Date Fair Value per Share | $ 2.52 | $ 2.56

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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