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INTANGIBLE ASSETS (Tables)
 9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill [Table Text Block]

The components of intangible assets consisted of the following as of the dates set forth below (amounts in thousands):
 
Weighted Average Useful Lives (in years) September 30, 2019
 
September 30,
2019
 
December 31,
2018
Amortizable intangible assets:
 
 
 
 
 
     Customer relationships
7.9
 
$
12,151

 
$
12,967

     Patents, trademarks and other
7.8
 
11,224

 
11,356

          Total at cost
 
 
23,375

 
24,323

     Less accumulated amortization
 
 
(13,407
)
 
(12,676
)
 
 
 
$
9,968

 
$
11,647
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
The estimated aggregate amortization expense at September 30, 2019, for each of the years (or other periods) set forth below was as follows (amounts in thousands):
October 1 - December 31, 2019
$
573

2020
2,029

2021
1,331

2022
955

2023
955

Thereafter
4,125

 
$
9,968