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INTANGIBLE ASSETS (Tables) | 3 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill [Table Text Block] | The components of intangible assets consisted of the following (amounts in thousands):
| Weighted Average Useful Lives (in years) March 31, 2020 |  | March 31, 2020 |  | December 31, 2019
Amortizable intangible assets: |  |  |  |  |
Customer relationships | 7.4 |  | $ | 11,047 |  |  | $ | 12,629 |
Patents, trademarks and other | 8.5 |  | 9,897 |  |  | 11,598 |
Total at cost |  |  | 20,944 |  |  | 24,227 |
Less accumulated amortization |  |  | (12,662 | ) |  | (14,461 | )
|  |  | $ | 8,282 |  |  | $ | 9,766 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] | The estimated aggregate amortization expense at March 31, 2020, for each of the years (or other periods) set forth below was as follows (amounts in thousands):
April 1 - December 31, 2020 | $ | 1,455 |
2021 | 1,207 |
2022 | 881 |
2023 | 881 |
2024 | 880 |
Thereafter | 2,978 |
| $ | 8,282 |

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