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INTANGIBLE ASSETS (Tables)
 6 Months Ended
Jun. 30, 2017
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) June 30, 2017
 
June 30,
2017
 
December 31,
2016
Amortizable intangible assets:
 
 
 
 
 
     Customer relationships
10.2
 
$
14,006

 
$
13,171

     Patents, trademarks and other
7.5
 
15,327

 
14,629

          Total at cost
 
 
29,333

 
27,800

     Less accumulated amortization
 
 
(13,090
)
 
(11,399
)
 
 
 
$
16,243

 
$
16,401
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] The estimated aggregate amortization expense at June 30, 2017, for each of the years (or other periods) set forth below is as follows (amounts in thousands):
July 1 - December 31, 2017
$
1,399

2018
2,237

2019
2,237

2020
2,237

2021
1,438

Thereafter
6,695

 
$
16,243