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Note 16 - Stock Option Plans (Tables) | 12 Months Ended
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Jan. 31, 2025
Notes Tables |
Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] |
|  | Year Ended January 31, |
|  | 2025 |
Risk free interest rate |  |  | 3.54%-4.47% |
Expected life (in years) |  |  | 5.52-6.87 |
Expected volatility |  |  | 66% -82% |
Expected dividend yield |  |  | 0.00 | %
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  |  |  |  |  | Average |  |  |  |  |
|  |  |  |  |  | Weighted |  |  | Remaining |  |  | Aggregate |
|  | Number of |  |  | Average |  |  | Contractual |  |  | Intrinsic |
|  | Shares |  |  | Exercise |  |  | Term |  |  | Value |
|  | (in thousands) |  |  | Price |  |  | (in years) |  |  | (in thousands) |
Outstanding, January 31, 2024 |  |  | 358 |  |  | $ | 27.99 |  |  |  | 5.07 |  |  | $ | — |
Granted |  |  | 418 |  |  |  | 5.90 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited |  |  | (7 | ) |  |  | 13.14 |  |  |  |  |  |  |  |  |
Expired |  |  | (148 | ) |  |  | 33.76 |  |  |  |  |  |  |  |  |
Outstanding, January 31, 2025 |  |  | 621 |  |  | $ | 11.93 |  |  |  | 7.93 |  |  | $ | — |
Exercisable at January 31, 2025 |  |  | 183 |  |  | $ | 26.13 |  |  |  | 3.66 |  |  | $ | — |
Nonvested at January 31, 2025 |  |  | 438 |  |  | $ | 6.00 |  |  |  | 9.72 |  |  | $ | — |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 50 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/718-50/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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