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INTANGIBLE ASSETS
 3 Months Ended
Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Disclosure [Text Block] INTANGIBLE ASSETS

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


   
Amortization related to intangible assets for the three months ended March 31, 2017 and 2016, totaled $0.7 million and $0.7 million, respectively. Intangible assets are included as a component of other assets in the Consolidated Condensed Balance Sheet.

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