INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2021

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, 2021	March 31, 2021		December 31, 2020
Amortizable intangible assets:
Patents, trademarks and other	11.53	$	10,062	$	10,181
Less accumulated amortization		(8,361)		(8,206)
		$	1,701	$	1,975

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The estimated aggregate amortization expense at March 31, 2021 for each of the years (or other periods) set forth below was as follows (amounts in thousands):

April 1 - December 31, 2021	$	199
2022	144
2023	144
2024	138
2025	123
Thereafter	953
	$	1,701