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INTANGIBLE ASSETS (Tables) | 6 Months Ended
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Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill [Table Text Block] | The components of intangible assets, net consisted of the following (amounts in thousands):
| Weighted Average Useful Lives (in years) June 30, 2022 |  | June 30, 2022 |  | December 31, 2021
Amortizable intangible assets: |  |  |  |  |
Patents, trademarks and other | 10.98 |  | $ | 10,084 |  |  | $ | 10,084 |
Less accumulated amortization |  |  | (8,661) |  |  | (8,586) |
|  |  | $ | 1,423 |  |  | $ | 1,498 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] | The estimated aggregate amortization expense at June 30, 2022 for each of the years (or other periods) set forth below was as follows (amounts in thousands):
July 1 - December 31, 2022 | $ | 70 |
2023 | 145 |
2024 | 132 |
2025 | 123 |
2026 | 123 |
Thereafter | 830 |
| $ | 1,423 |

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