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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss | $ 4,425 | $ 5,655 |
Financing Receivable, Allowance for Credit Loss | 800 | 900 |
Accounts Receivable, Credit Loss Expense (Reversal) | 4,185 | 2,244 | $ 1,062
Other Employee-related Liabilities, Current | 8,900 | 10,300 |
Other Accrued Liabilities, Current | $ 3,200 | 2,700 |
Sisecam Wyoming LLC [Member] |  |  |
Equity Method Investment, Ownership Percentage | 49.00% |  |
Minimum [Member] |  |  |
Lessor, Operating Lease, Term of Contract (Year) | 5 years |  |
Operating Lease Late Payment Recovery Period (Year) | 3 years |  |
Maximum [Member] |  |  |
Lessor, Operating Lease, Term of Contract (Year) | 40 years |  |
Operating Lease Late Payment Recovery Period (Year) | 5 years |  |
Accounts Receivable [Member] |  |  |
Accounts Receivable, Allowance for Credit Loss | $ 4,700 | 5,400 |
Other Current Assets [Member] |  |  |
Accounts Receivable, Allowance for Credit Loss | $ 0 | $ 300 |

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