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ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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ACCRUED EXPENSES AND OTHER LIABILITIES |  |
Accrued payroll and related expenses | $ 3,119 | $ 4,458
Accrued sales incentives and discounts | 1,214 | 3,292
Accrued warranty costs | 4,641 | 5,030
Deferred revenue | 1,313 | 1,245
Other | 1,011 | 1,558
Total accrued expenses and other liabilities | $ 11,298 | $ 15,583

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