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Note 20 - Subsequent Events (Details Textual) $ in Thousands, € in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 01, 2023 USD ($) | Feb. 01, 2023 EUR (€) | Jan. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Proceeds from Lines of Credit, Total |  |  |  | $ 0 | $ 115,000
Subsequent Event [Member] | Credit and Security Agreement with KeyBank [Member] | Revolving Credit Facility [Member] |  |  |  |  |
Proceeds from Lines of Credit, Total |  |  | $ 5,000 |  |
Innolectric AG [Member] | Subsequent Event [Member] |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 33.33% | 33.33% |  |  |
Payments to Acquire Interest in Subsidiaries and Affiliates, Total | $ 8,800 | € 8 |  |  |

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