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Goodwill and Other Intangible Assets
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
The changes in the net carrying amount of goodwill for the years ended December 31, are as follows:
 
 20242023
Balance as of January 1,$806,844 $815,429 
Foreign currency translation and other adjustments
(1,486)(8,585)
Balance as of December 31,$805,358 $806,844 

The 2023 change in goodwill includes an immaterial correction of $9.0 million to record deferred tax assets associated with the deductibility of contingent consideration related to purchase accounting from 2022.

Total accumulated goodwill impairment losses aggregated $107.0 million at December 31, 2024 and 2023, respectively.
Other intangible assets consist of the following:

 December 31, 2024December 31, 2023
Weighted Average Amortization Period (Years)Gross
Carrying
Amount		Accumulated
Amortization		Gross
Carrying
Amount		Accumulated
Amortization
Intangible assets with definite lives:22  
Customer and distributor relationships24$369,774 $(205,013)$369,930 $(188,486)
Sales representation, marketing and promotional rights25149,376 (78,000)149,376 (72,000)
Patents and other intangible assets1685,392 (55,802)82,594 (54,120)
Developed technology18320,204 (54,812)320,204 (44,558)
Intangible assets with indefinite lives:
  
Trademarks and tradenames86,544 — 86,544 — 
 $1,011,290 $(393,627)$1,008,648 $(359,164)

Amortization expense related to intangible assets which are subject to amortization totaled $34.7 million, $35.2 million and $33.7 million for the years ending December 31, 2024, 2023 and 2022, respectively, and is included as a reduction of revenue (for amortization related to our sales representation, marketing and promotional rights) and in selling and administrative expense (for all other intangible assets) in the consolidated statements of comprehensive income (loss).
    
The estimated amortization expense related to intangible assets at December 31, 2024 for each of the five succeeding years is as follows:

Amortization included in expenseAmortization recorded as a reduction of revenueTotal
2025$29,492 $6,000 $35,492 
202629,636 6,000 35,636 
202730,693 6,000 36,693 
202833,822 6,000 39,822 
202933,037 6,000 39,037