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Other Intangible Assets
 12 Months Ended
Dec. 31, 2023
Other Intangible Assets [Abstract]  
Other Intangible Assets
5.
Other Intangible Assets

Other intangible assets consist of the following (U.S. dollars in thousands):

 
Carrying Amount at December 31,
  
   
2023
    
2022
  
Indefinite life intangible assets:
            
Trademarks and trade names
  
$
24,599
    
$
24,599
  

 
December 31, 2023
    
December 31, 2022
   Weighted-average
Finite life intangible assets:
  
Gross Carrying
Amount
    
Accumulated
Amortization
    
Gross Carrying
Amount
    
Accumulated
Amortization
  
Amortization
Period
Scanner technology
  
$
40,716
    
$
40,716
    
$
40,716
    
$
40,716
  
18 years
Developed technology
    
47,821
      
30,322
      
43,841
      
27,365
  
14 years
Sales force network
    
11,598
      
11,598
      
11,598
      
11,598
  
15 years
Trademarks
    
29,904
      
5,844
      
7,860
      
4,200
  
16 years
Customer relationships
     52,820       23,823       33,788       18,055   8 years
Other
    
20,077
      
9,923
      
14,497
      
8,264
  
8 years
   
$
202,936
    
$
122,226
    
$
152,300
    
$
110,198
  
13 years

Amortization of finite-life intangible assets totaled $11.9 million, $9.7 million and $11.7 million for the years ended December 31, 2023, 2022 and 2021, respectively.

The estimated annual amortization expense for each of the five succeeding fiscal years are as follows (U.S. dollars in thousands):

Year Ending December 31,
      
2024
  
$
15,813
  
2025
    
12,745
  
2026
    
10,895
  
2027
    
8,340
  
2028
    
8,028
  

Indefinite life intangible assets are not amortized, rather they are subject to annual impairment tests. Finite life intangibles are amortized over their useful lives unless circumstances occur that cause the Company to revise such lives or review such assets for impairment. In connection with the Company’s decision to exit the Grow Tech segment, a $3.8 million impairment charge related to other indefinite lived intangibles and a $5.2 million impairment charge related to other finite lived intangibles was recorded in the year ended December 31, 2021, see Note 20 for further discussion restructuring and impairment of the Grow Tech segment. During 2022, the Company recorded a $1.7 million impairment charge for other intangibles associated with our 2022 restructuring. See Note 20 for further discussion.