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Note 3 - Supplemental Balance Sheet Information (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2018 | Dec. 31, 2011
Depreciation, Amortization and Accretion, Net | $ 2,000 | $ 2,000 |  |  |
Goodwill, Impaired, Accumulated Impairment Loss | 0 | 2,500 |  |  |
Goodwill, Ending Balance | 1,382 | 1,708 | $ 4,166 |  |
Goodwill, Impairment Loss | 0 | 2,458 |  |  |
Increase (Decrease) in Intangible Assets, Current | (1,100) |  |  |  |
Amortization of Intangible Assets |  | 400 |  |  |
Resource Plus, Inc [Member] |  |  |  |  |
Goodwill, Ending Balance |  |  |  | $ 2,000 |
Goodwill, Impairment Loss |  | 2,000 |  |  |
Mexico Business Member] |  |  |  |  |
Goodwill, Ending Balance |  |  |  |  | $ 500
Goodwill, Impairment Loss |  | 500 |  |  |
Resource Plus, Inc [Member] |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  | 51.00% |
Mexico Business Member] |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  | 51.00%
Capitalized Software Costs [Member] |  |  |  |  |
Capitalized Computer Software, Gross | 1,000 | 1,500 |  |  |
Capitalized Computer Software, Amortization | 1,100 | $ 1,200 |  |  |
Customer Contracts And Lists [Member] |  |  |  |  |
Amortization of Intangible Assets | $ 400 |  |  |  |
Customer Contracts And Lists [Member] | Minimum [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |  |  |  |
Customer Contracts And Lists [Member] | Maximum [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 25 years |  |  |  |

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