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INTANGIBLE ASSETS (Tables)
3 Months Ended
Mar. 31, 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)
March 31, 2022
March 31,
2022
December 31,
2021
Amortizable intangible assets:
     Patents, trademarks and other11.20$9,457 $10,084 
     Less accumulated amortization(7,998)(8,586)
$1,459 $1,498 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
The estimated aggregate amortization expense at March 31, 2022 for each of the years (or other periods) set forth below was as follows (amounts in thousands):
April 1 - December 31, 2022$106 
2023145 
2024132 
2025123 
2026123 
Thereafter830 
 $1,459