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Note 9 - Intangible Assets | 12 Months Ended
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Jan. 31, 2025
Notes to Financial Statements |
Goodwill and Intangible Assets Disclosure [Text Block] | 9. Intangible Assets Intangible assets consisted of the following:
|  |  |  |  |  | January 31, 2025 |  |  | January 31, 2024 |
|  | Weighted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Average |  |  | Gross |  |  |  |  |  |  | Net |  |  | Gross |  |  |  |  |  |  | Net |
|  | Life at |  |  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Carrying |  |  | Accumulated |  |  | Carrying |
|  | 1/31/2025 |  |  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
|  |  |  |  |  | (in thousands) |  |  | (in thousands) |
Proprietary rights |  |  | 3.9 |  |  | $ | 7,472 |  |  | $ | (5,501 | ) |  |  | 1,971 |  |  | $ | 7,473 |  |  | $ | (5,053 | ) |  |  | 2,420 |
Customer relationships |  |  | — |  |  |  | 4,884 |  |  |  | (4,884 | ) |  |  | — |  |  |  | 4,884 |  |  |  | (4,852 | ) |  |  | 32 |
Patents |  |  | 0.9 |  |  |  | 2,540 |  |  |  | (2,269 | ) |  |  | 271 |  |  |  | 2,540 |  |  |  | (2,190 | ) |  |  | 350 |
Trade name |  |  | 1.3 |  |  |  | 134 |  |  |  | (121 | ) |  |  | 13 |  |  |  | 134 |  |  |  | (108 | ) |  |  | 26 |
Other |  |  | 0.1 |  |  |  | 481 |  |  |  | (428 | ) |  |  | 53 |  |  |  | 426 |  |  |  | (366 | ) |  |  | 60 |
Amortizable intangible assets |  |  | $ | 15,511 |  |  | $ | (13,203 | ) |  | $ | 2,308 |  |  | $ | 15,457 |  |  | $ | (12,569 | ) |  | $ | 2,888 |
The Company did not record impairment of intangible assets during fiscal years 2025 and 2024. Aggregate amortization expense was approximately $638,000 and $795,000 for fiscal 2025 and fiscal 2024, respectively. As of January 31, 2025, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):
For fiscal year ending January 31: |  |  |  |
2026 |  | $ | 565 |
2027 |  |  | 379 |
2028 |  |  | 315 |
2029 |  |  | 213 |
2030 |  |  | 213 |
Thereafter |  |  | 623 |
Total |  | $ | 2,308 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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