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INTANGIBLE ASSETS (Tables)
 3 Months Ended
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