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Note 6 - Balance Sheet - Continuing Operations | 9 Months Ended
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Oct. 31, 2022
Notes to Financial Statements |
Supplemental Balance Sheet Disclosures [Text Block] | 6. Balance Sheet - Continuing Operations
|  | As of October 31, 2022 |  |  | As of January 31, 2022 |
|  | (in thousands) |
|  | Current |  |  | Long-term |  |  | Total |  |  | Current |  |  | Long-term |  |  | Total |
Accounts receivable |  | $ | 4,400 |  |  | $ | — |  |  | $ | 4,400 |  |  | $ | 8,610 |  |  | $ | 650 |  |  | $ | 9,260 |
Less allowance for doubtful accounts |  |  | (504 | ) |  |  | — |  |  |  | (504 | ) |  |  | (484 | ) |  |  | — |  |  |  | (484 | )
Accounts receivable net of allowance for doubtful accounts |  | $ | 3,896 |  |  | $ | — |  |  | $ | 3,896 |  |  | $ | 8,126 |  |  | $ | 650 |  |  | $ | 8,776 |
|  | October 31, 2022 |  |  | January 31, 2022 |
|  | (in thousands) |
Inventories: |  |  |  |  |  |  |  |
Raw materials |  | $ | 9,810 |  |  | $ | 8,511 |
Finished goods |  |  | 4,510 |  |  |  | 3,806 |
Work in progress |  |  | 4,437 |  |  |  | 3,567 |
Cost of inventories |  |  | 18,757 |  |  |  | 15,884 |
Less allowance for obsolescence |  |  | (1,920 | ) |  |  | (1,878 | )
Total inventories, net |  | $ | 16,837 |  |  | $ | 14,006 |
|  | October 31, 2022 |  |  | January 31, 2022 |
|  | (in thousands) |
Property and equipment: |  |  |  |  |  |  |  |
Furniture and fixtures |  | $ | 10,038 |  |  | $ | 9,865 |
Autos and trucks |  |  | 359 |  |  |  | 495 |
Marine seismic service equipment |  |  | — |  |  |  | 3,880 |
Land and buildings |  |  | 4,845 |  |  |  | 4,555 |
Cost of property and equipment |  |  | 15,242 |  |  |  | 18,795 |
Accumulated depreciation and amortization |  |  | (11,139 | ) |  |  | (14,523 | )
Total property and equipment, net |  | $ | 4,103 |  |  | $ | 4,272 |
As of January 31, 2022, the Company completed an annual review of long-lived assets noting that the undiscounted future cash flows exceeded their carrying value and no impairment was recorded. Since January 31, 2022, there have not been changes to the market, economic or legal environment in which the Company operates that would, in the aggregate, indicate additional impairment analysis is necessary as of October 31, 2022.

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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