v3.26.3
Acquired Intangible Assets
 9 Months Ended
Sep. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]  
Acquired Intangible Assets Acquired Intangible Assets
Acquired identifiable intangible assets consist of the following (in thousands):
September 30, 2026December 31, 2025
GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
Customer relationships$317,394 $(123,674)$193,720 $323,312 $(111,256)$212,056 
Trademarks and trade names⁽ᵃ⁾88,794 (5,495)83,299 91,666 (5,284)86,382 
Patents and developed technology14,123 (5,487)8,636 14,123 (4,816)9,307 
Other4,279 (4,279)— 4,280 (4,280)— 
Total acquired intangible assets$424,590 $(138,935)$285,655 $433,381 $(125,636)$307,745 
(a) Trademarks and trade names include indefinite lived intangible assets which are not amortized of $81.4 million and $84.2 million as of September 30, 2026 and December 31, 2025, respectively.
Total amortization expense for acquired intangible assets was $4.6 million and $13.9 million for the three and nine months ended September 30, 2026 and $4.7 million and $13.7 million for the comparable periods in 2025. Based on the current estimated useful lives assigned to our intangible assets, amortization expense is estimated to be $4.6 million for the remainder of 2026, $18.4 million in 2027, $18.4 million in 2028, $17.1 million in 2029 and $145.7 million in the aggregate for the years 2030 through 2041.