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PERMIT AND OTHER INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
PERMIT AND OTHER INTANGIBLE ASSETS

NOTE 5 PERMIT AND OTHER INTANGIBLE ASSETS

 

The following table summarizes changes in the carrying value of permits, which exist only in our Treatment Segment.

 

Permit (amount in thousands)  Treatment 
Balance as of December 31, 2020  $8,922 
Permit renewal   121 
Permit in progress   433 
Balance as of December 31, 2021  $9,476 
Permit in progress   134 
Balance as of December 31, 2022  $9,610 

 

 

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

 

   Weighted Average  December 31, 2022   December 31, 2021 
   Amortization  Gross       Net   Gross       Net 
Other Intangibles  Period  Carrying   Accumulated   Carrying   Carrying   Accumulated   Carrying 
(amount in thousands)  (Years)  Amount   Amortization   Amount   Amount   Amortization   Amount 
                            
Patent  8.3  $711   $(374)  $337   $787   $(351)  $436 
Software  3   640    (468)   172    592    (415)   177 
Customer relationships  10   3,370    (3,250)   120    3,370    (3,089)   281 
Total     $4,721   $(4,092)  $629   $4,749   $(3,855)  $894 

 

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

 

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

 

      
   Amount 
Year  (In thousands) 
     
2023  $    195 
2024   63 
2025   26 
2026   25 
2026   22 

 

Amortization expense recorded for definite-lived intangible assets was approximately $237,000 and $211,000, for the years ended December 31, 2022 and 2021, respectively.