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Income Taxes - Summary of significant components of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Deferred tax assets: |  |
Self-insurance |  | $ 3,386
Long-term retirement plan |  | 5,276
State net operating loss carryforwards | $ 1,469 | 2,010
Stock-based compensation | 2,581 | 1,995
Acquisition related employment costs | 2,937 |
Inventory reserve | 3,068 | 3,178
Lease liability | 5,994 | 7,067
Capitalized research and development | 147 | 4,721
All others, net | 2,343 | 3,785
Gross deferred tax assets | 18,539 | 31,418
Deferred tax liabilities: |  |
Depreciation | (81,797) | (75,559)
Right of use asset | (6,317) | (7,013)
Goodwill amortization | (7,300) | (7,035)
Gross deferred tax liabilities | (95,414) | (89,607)
Net deferred tax liabilities | $ (76,875) | $ (58,189)

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