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Note 15 - Income Tax (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Tax Credit Carryforward Duration Limit (Year) | 20 years |
Undistributed Earnings of Foreign Subsidiaries | $ 950,864 | $ 842,671
Unrecognized Tax Benefits, Ending Balance | 148 | 148
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 148 | 148
Tax Adjustments, Settlements, and Unusual Provisions | 0 | 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total | $ 38 | $ 38
Minimum [Member] | Foreign Tax Authority [Member] | Canada Revenue Agency [Member] |  |
Income Tax Return Examination Period (Year) | 3 years |
Minimum [Member] | Foreign Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Income Tax Return Examination Period (Year) | 3 years |
Maximum [Member] | Foreign Tax Authority [Member] | Canada Revenue Agency [Member] |  |
Income Tax Return Examination Period (Year) | 4 years |
Maximum [Member] | Foreign Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Income Tax Return Examination Period (Year) | 5 years |
Canada and United States [Member] | Minimum [Member] |  |
Tax Credit Carryforward Duration Limit (Year) | 9 years |
Canada and United States [Member] | Maximum [Member] |  |
Tax Credit Carryforward Duration Limit (Year) | 20 years |

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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 25 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482620/740-10-25-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 25 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482620/740-10-25-10 + Details
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