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GOODWILL AND INTANGIBLE ASSETS, NET
9 Months Ended
Sep. 30, 2016
GOODWILL AND INTANGIBLE ASSETS, NET [Abstract]  
GOODWILL AND INTANGIBLE ASSETS, NET
7. GOODWILL AND INTANGIBLE ASSETS, NET

Goodwill and intangible assets were recorded in relation to the acquisition of TC on October 1, 2014.

Intangible Assets

The following tables summarize the gross carrying amounts and accumulated amortization of intangible assets by major class (in thousands):
 
   
September 30, 2016
 
Intangible assets subject to amortization (Definite-lived)
 
Gross
  
Accumulated
Amortization
  
Net
 
Customer relationships
 $16,852  $(2,247) $14,605 
Non-compete agreements
  94   (38)  56 
Licenses and permits
  1,471   (258)  1,213 
Developed technology
  6,131   (1,226)  4,905 
    24,548   (3,769)  20,779 
Intangible assets not subject to amortization (Indefinite-lived)
            
Emissions Allowance
  197   -   197 
Trade name
  2,158   -   2,158 
Total
 $26,903  $(3,769) $23,134 

   
December 31, 2015
 
Intangible assets subject to amortization (Definite-lived)
 
Gross
  
Accumulated
Amortization
  
Net
 
Customer relationships
 $16,852  $(1,404) $15,448 
Non-compete agreements
  94   (24)  70 
Licenses and permits
  1,471   (160)  1,311 
Developed technology
  6,131   (766)  5,365 
    24,548   (2,354)  22,194 
Intangible assets not subject to amortization (Indefinite-lived)
            
Emissions Allowance
  197   -   197 
Trade name
  2,158   -   2,158 
Total
 $26,903  $(2,354) $24,549 

Amortization expense for intangible assets included in cost of sales for the three months ended September 30, 2016, and 2015, was approximately $471,000 and $471,000, respectively and for the nine months ended September 30, 2016, and 2015, was approximately $1,415,000 and $1,413,000, respectively.

Based on identified intangible assets that are subject to amortization as of September 30, 2016, we expect future amortization expenses for each period to be as follows (in thousands):

   
Remainder of
2016
  
2017
  
2018
  
2019
  
2020
  
Thereafter
 
Customer relationships
 $281  $1,123  $1,123  $1,123  $1,123  $9,832 
Non-compete agreements
  6   19   19   12   -   - 
Licenses and permits
  26   106   106   106   106   763 
Developed technology
  153   613   613   613   613   2,300 
Total future amortization expense
 $466  $1,861  $1,861  $1,854  $1,842  $12,895