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ACCRUED EXPENSES AND OTHER LIABILITIES | 12 Months Ended
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Dec. 31, 2021
ACCRUED EXPENSES AND OTHER LIABILITIES |
ACCRUED EXPENSES AND OTHER LIABILITIES | NOTE 6: ACCRUED EXPENSES AND OTHER LIABILITIES Accrued expenses and other liabilities consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, |  | 2021 |  | 2020
(in thousands) |  | ​ |  |  | ​ |
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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