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Intangible Assets, Net
 9 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets, Net Intangible Assets, Net
Intangible Assets, Net

The components of intangible assets, net were as follows:
 September 30, 2025December 31, 2024
(In thousands)
Gross (1)
Accumulated
Amortization (1)
Net
Gross (1)
Accumulated
Amortization (1)
Net
Capitalized software development costs$1,659 $(512)$1,147 $2,575 $(1,150)$1,425 
Customer relationships 6,340 (5,069)1,271 6,340 (4,526)1,814 
Developed and core technology 740 (469)271 740 (398)342 
Patents35,046 (15,172)19,874 34,758 (14,339)20,419 
Trademarks and trade names50 (30)20 450 (412)38 
Total intangible assets, net$43,835 $(21,252)$22,583 $44,863 $(20,825)$24,038 
(1)This table excludes the gross value of fully amortized intangible assets totaling $52.3 million and $49.3 million at September 30, 2025 and December 31, 2024, respectively.

Amortization expense is recorded in selling, general and administrative expenses, except amortization expense related to capitalized software development costs, which is recorded in cost of sales. Amortization expense by statement of operations caption was as follows:
(In thousands)Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
Cost of sales$143 $207 $485 $488 
Selling, general and administrative expenses1,105 1,160 3,302 3,336 
Total amortization expense$1,248 $1,367 $3,787 $3,824 
 
Estimated future annual amortization expense related to our intangible assets at September 30, 2025, was as follows:
(In thousands)
2025 (remaining 3 months)$1,259 
20264,866 
20273,976 
20283,056 
20292,795 
Thereafter6,631 
Total$22,583