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Note 11 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year ended December 31 |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 18,176 |  |  | $ | (2,854 | ) |  | $ | 10,515 |
State |  |  | 2,606 |  |  |  | 804 |  |  |  | 1,505 |
|  |  | 20,782 |  |  |  | (2,050 | ) |  |  | 12,020 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (2,617 | ) |  |  | 7,709 |  |  |  | (2,187 | )
State |  |  | (425 | ) |  |  | (148 | ) |  |  | (1,081 | )
|  |  | (3,042 | ) |  |  | 7,561 |  |  |  | (3,268 | )
|  | $ | 17,740 |  |  | $ | 5,511 |  |  | $ | 8,752 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Federal income tax expense at statutory rate |  | $ | 15,517 |  |  | $ | 6,139 |  |  | $ | 9,946 |
State taxes, net of federal benefit |  |  | 2,295 |  |  |  | 762 |  |  |  | 1,445 |
Valuation allowance |  |  | (495 | ) |  |  | (67 | ) |  |  | (1,202 | )
Change in uncertain tax positions, net |  |  | 540 |  |  |  | 225 |  |  |  | 356 |
Research and development credit |  |  | (704 | ) |  |  | (1,012 | ) |  |  | (1,333 | )
Investment tax credit |  |  | - |  |  |  | (682 | ) |  |  | - |
State rate change |  |  | (165 | ) |  |  | 92 |  |  |  | (168 | )
Other |  |  | 752 |  |  |  | 54 |  |  |  | (292 | )
|  | $ | 17,740 |  |  | $ | 5,511 |  |  | $ | 8,752 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31, |
|  | 2024 |  |  | 2023 |
Deferred tax assets: |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 588 |  |  | $ | 413 |
Inventory reserves |  |  | 1,749 |  |  |  | 1,468 |
Warranty liability |  |  | 1,343 |  |  |  | 1,690 |
Deferred compensation |  |  | 2,237 |  |  |  | 2,124 |
Pension and retiree health benefit obligations |  |  | 866 |  |  |  | 1,225 |
Accrued vacation |  |  | 844 |  |  |  | 1,137 |
Research expenditures |  |  | 6,723 |  |  |  | 5,842 |
Operating lease liabilities |  |  | 17,625 |  |  |  | 4,730 |
Net operating losses |  |  | 1,194 |  |  |  | 1,663 |
Other accrued liabilities |  |  | 4,550 |  |  |  | 4,376 |
State credit carryforwards |  |  | 1,060 |  |  |  | 1,032 |
Other |  |  | 338 |  |  |  | 404 |
Valuation allowance |  |  | (1,510 | ) |  |  | (2,005 | )
Total deferred tax assets |  |  | 37,607 |  |  |  | 24,099 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Interest rate swaps |  |  | (573 | ) |  |  | (994 | )
Tax deductible goodwill and other intangibles |  |  | (37,125 | ) |  |  | (35,974 | )
Accelerated depreciation |  |  | (6,754 | ) |  |  | (9,924 | )
Operating leases - right of use assets |  |  | (17,289 | ) |  |  | (4,430 | )
Other |  |  | (440 | ) |  |  | (680 | )
Total deferred tax liabilities |  |  | (62,181 | ) |  |  | (52,002 | )
Net deferred tax liabilities |  | $ | (24,574 | ) |  | $ | (27,903 | )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Balance at beginning of year |  | $ | 1,701 |  |  | $ | 1,519 |  |  | $ | 1,214 |
Increases for tax positions taken in the current year |  |  | 681 |  |  |  | 277 |  |  |  | 350 |
Increases for tax positions taken in prior years |  |  | 951 |  |  |  | - |  |  |  | - |
Decreases due to lapses in the statute of limitations |  |  | (828 | ) |  |  | (95 | ) |  |  | (45 | )
Balance at the end of year |  | $ | 2,505 |  |  | $ | 1,701 |  |  | $ | 1,519 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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