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v3.23.1

ACCRUED LIABILITIES (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
ACCRUED LIABILITIES |
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2023 |  | 2022
Compensation and fringe benefits | ​ | $ | 11,305 | ​ | $ | 15,818
Accrued business acquisition consideration | ​ |  | 12,416 | ​ |  | 12,500
Warranty reserve | ​ |  | 2,326 | ​ |  | 2,160
Income taxes payable | ​ | ​ | 4,737 | ​ | ​ | 3,934
Operating lease liabilities - current | ​ | ​ | 4,525 | ​ | ​ | 4,224
Finance lease obligations - current | ​ | ​ | 386 | ​ | ​ | 377
Contract liabilities | ​ | ​ | 4,610 | ​ | ​ | 4,807
Other accrued expenses | ​ |  | 5,417 | ​ |  | 4,301
​ | ​ | $ | 45,722 | ​ | $ | 48,121

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