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Note 4 - Supplemental Balance Sheet Information (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2011
Depreciation, Depletion and Amortization, Nonproduction | $ 454 | $ 451 | $ 497 | $ 451 | $ 926 | $ 941 | $ 1,553 | $ 1,827 |
Goodwill |  |  |  |  |  |  | 856 | 1,294 |
Mexico Business Member] |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | $ 3,000
Capitalized Software Costs [Member] |  |  |  |  |  |  |  |  |
Capitalized Computer Software, Gross |  |  |  |  |  |  | 1,000 | 1,000 |
Capitalized Computer Software, Amortization |  |  |  |  |  |  | 1,300 | 1,100 |
Customer Contracts And Lists [Member] |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  |  | $ 200 | $ 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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