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INTANGIBLE ASSETS (Tables)
 3 Months Ended
Mar. 31, 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) March 31, 2017
 
March 31,
2017
 
December 31,
2016
Amortizable intangible assets:
 
 
 
 
 
     Customer relationships
10.4
 
$
13,731

 
$
13,171

     Patents, trademarks and other
7.6
 
15,798

 
14,629

          Total at cost
 
 
29,529

 
27,800

     Less accumulated amortization
 
 
(12,500
)
 
(11,399
)
 
 
 
$
17,029

 
$
16,401
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] The estimated aggregate amortization expense at March 31, 2017, for each of the years (or other periods) set forth below is as follows (amounts in thousands):
April 1 - December 31, 2017
$
1,799

2018
2,375

2019
2,237

2020
2,237

2021
1,695

Thereafter
6,686

 
$
17,029