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SIGNIFICANT ACCOUNTING POLICIES - Dividends, Advertising and Marketable securities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting policies: |  |  |
Prepaid expenses related to unamortized product brochure costs | $ 117 | $ 194 |
Selling, general and administrative expenses |  |  |
Accounting policies: |  |  |
Advertising expenses | $ 2,300 | $ 2,100 | $ 1,600

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