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Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Accrued Expenses |  |
Salaries, wages, and commissions | $ 5,052 | $ 3,776
Income taxes | 3,212 | 0
Taxes, other than income taxes | 889 | 133
Advances from customers | 441 | 298
Insurance | 517 | 702
Professional fees | 527 | 272
Warranty reserve | 40 | 233
Benefit plans | 333 | 238
Interest rate swap liability | 0 | 45
Customer rebate liability | 379 | 168
Other accrued items | 1,017 | 258
Accrued expenses and other current liabilities | $ 12,407 | $ 6,123

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