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Intangible Assets
 9 Months Ended
Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets

5. Intangible Assets

 

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

 

       September 30, 2021   December 31, 2020 
   Weighted Average   Gross       Net   Gross       Net 
   Amortization Period   Carrying   Accumulated   Carrying   Carrying   Accumulated   Carrying 
   (Years)   Amount   Amortization   Amount   Amount   Amortization   Amount 
Other Intangibles (amount in thousands)                            
Patent   12.5   $784   $(348)  $436   $742   $(334)  $408 
Software   3    588    (415)   173    418    (411)   7 
Customer relationships   10    3,370    (3,044)   326    3,370    (2,910)   460 
Total       $4,742   $(3,807)  $935   $4,530   $(3,655)  $875 

 

The intangible assets noted above are amortized on a straight-line basis over their useful lives with the exception of customer relationships which are being amortized using an accelerated method.

 

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

Year  (In thousands) 
     
2021 (remaining)  $59 
2022   227 
2023   187 
2024   57 
2025   14 

 

Amortization expense relating to the definite-lived intangible assets as discussed above was $51,000 and $152,000 for the three and nine months ended September 30, 2021, respectively, and $58,000 and $167,000 for the three and nine months ended September 30, 2020, respectively.