v3.26.3
Intangible assets
12 Months Ended
Dec. 31, 2025
HMH Holding BV And Subsidiaries [Member]  
Intangible Asset, Finite-Lived [Line Items]  
Intangible assets
6. Intangible assets
Intangible assets consisted of the following as of December 31, 2025 and 2024:
 
             
                   2025                   2024  
     Useful life     Gross
carrying
amount
    Accumulated
amortization
    Net
carrying
amount
    Gross
carrying
amount
    Accumulated
amortization
    Net
carrying
amount
 
Patents and rights
    3-5 years     $ 21,180     $ (18,785 )    $ 2,395     $ 20,107     $ (11,627 )    $ 8,480  
Customer relationships
    2-20 years       113,523       (46,299 )      67,224       112,893       (37,135 )      75,758  
Development costs
    3-8 years       83,397       (30,946 )      52,451       66,049       (15,133 )      50,916  
 
 
 
 
Total
    $ 218,100     $ (96,030 )    $ 122,070     $ 199,049     $ (63,895 )    $ 135,154  
 
 
Amortization expense recognized for the years ended December 31, 2025 and 2024 was $24.3 million and $20.7 million, respectively, and was recorded in the consolidated statements of income within cost of sales and selling, general and administrative expenses.
 
The following table outlines the estimated future amortization expense related to intangible assets held as of December 31, 2025:
 
   
Year ending December 31,    Amortization expense  
2026
   $ 29,888  
2027
     28,067  
2028
     15,296  
2029
     5,378  
2030
     3,733  
Thereafter
     39,708  
  
 
 
 
Total
   $ 122,070