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Note 16 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2025 | Mar. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Income tax benefit computed at federal statutory rate |  |  |  |  |  |  |  |  |  |  |  |  | $ (1,500) | $ (3,945) | $ (4,129)
State income taxes, net of federal benefit |  |  |  |  |  |  |  |  |  |  |  |  | (593) | (598) | (696)
Foreign income taxed at different rates |  |  |  |  |  |  |  |  |  |  |  |  | 953 | (3,521) | 1,477
Worthless stock deduction |  |  |  |  |  |  |  |  |  |  |  |  | (45,600) | 0 | 0
Impact of investments in subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | (23,348) | (22,583) | (6,059)
Change in deferred tax asset valuation allowance |  |  |  |  |  |  |  |  |  |  |  |  | 36,475 | 31,793 | (7)
Impact of change in uncertain tax positions |  |  |  |  |  |  |  |  |  |  |  |  | (398) | 36 | (1,321)
Global intangible low taxed income, net of foreign tax credits |  |  |  |  |  |  |  |  |  |  |  |  | 4,914 | 3,767 | 310
Compensation |  |  |  |  |  |  |  |  |  |  |  |  | 1,353 | 1,413 | 1,484
Tax credits |  |  |  |  |  |  |  |  |  |  |  |  | (1,538) | (1,199) | (1,425)
Other non-deductible expenses and other taxes |  |  |  |  |  |  |  |  |  |  |  |  | (111) | 1,461 | 1,069
Research and development expense deduction |  |  |  |  |  |  |  |  |  |  |  |  | (1,280) | (1,337) | (1,277)
Income tax (benefit) expense | $ (45,353) | $ 2,635 | $ 7,243 | $ 3,874 | $ 2,036 | $ 573 | $ 1,292 | $ 1,340 | $ 11,117 | $ 2,632 | $ 13,752 | $ 3,205 | (31,601) | 5,241 | (11,965)
Domestic Tax Jurisdiction [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impact of tax rate changes |  |  |  |  |  |  |  |  |  |  |  |  | $ (928) | $ (46) | $ (1,391)

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