Note 3 - Business Combinations and Acquisitions (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jan. 31, 2024 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
|
| Proceeds From Return of Investment | $ 0 | $ 41,000 | |||
| Gain (Loss) on Asset Acquisition, Net | $ (0) | 5,000 | |||
| Shanghai Lianheng Isocyanate Company Ltd. (“SLIC”) [Member] | |||||
| Asset Acquisition, Consideration Transferred | $ 218,000 | ||||
| Proceeds From Return on Investment and Return of Investment | 41,000 | $ 64,000 | |||
| Proceeds from Dividends Received | 34,000 | ||||
| Proceeds From Return of Investment | $ 30,000 | ||||
| Asset Acquisition, Costs | $ 0 | ||||
| Gain (Loss) on Asset Acquisition, Net | 51,000 | $ 5,000 | |||
| Noncash Prepaid Asset Writeoff | $ 71,000 | ||||