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Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Accounts Receivable, Allowance for Credit Loss | $ 1,100 | $ 700 |
Percentage of LIFO Inventory | 67.00% | 66.00% |
Depreciation | $ 15,500 | $ 15,900 | $ 13,300
Goodwill, Impairment Loss | 0 | 0 | 0
Advertising Expense | $ 4,500 | $ 4,300 | $ 3,300
Customer Concentration Risk [Member] | Revenue Benchmark [Member] |  |  |
Number of Major Customers | 0 | 0 | 0

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