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Note 14 - Equity and Stock-based Compensation (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2021 | Oct. 31, 2020 | Jan. 31, 2021
Preferred Stock, Dividends Per Share, Declared (in dollars per share) | $ 0.5625 |  |  |  |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 1,250,000 |  | 1,250,000 |  | 1,038,000
Preferred Stock, Liquidation Preference, Value | $ 31,200,000 |  | $ 31,200,000 |  |
Share-based Payment Arrangement, Expense | $ 183,000 | $ 219,000 | $ 419,000 | $ 449,000 |

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