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Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets

The following table summarizes information relating to the Company’s definite-lived intangible assets:

 

       June 30, 2019   December 31, 2018 
   Useful   Gross       Net   Gross       Net 
Intangibles (amount   Lives   Carrying   Accumulated   Carrying   Carrying   Accumulated   Carrying 
in thousands)  (Years)   Amount   Amortization   Amount   Amount   Amortization   Amount 
Patent   1-17   $740   $(348)  $392   $728   $(336)  $392 
Software   3    412    (406)   6    410    (403)   7 
Customer relationships   10    3,370    (2,601)   769    3,370    (2,491)   879 
Permit   10    545    (545)   -    545    (538)   7 
Total       $5,067   $(3,900)  $1,167   $5,053   $(3,768)  $1,285 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table summarizes the expected amortization over the next five years for our definite-lived intangible assets:

 

   Amount 
Year  (In thousands) 
     
2019 (remaining)  $    122 
2020   219 
2121   198 
2022   172 
2023   132