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Intangible Assets and Goodwill
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Goodwill Intangible Assets and Goodwill
Intangible Assets
The details of definite lived intangible assets were as follows (in thousands):
Estimated useful life
(in years) 		As of December 31,
 20242023
Patents
3 - 5
$— $6,345 
Development programs
2 - 4
7,200 7,200 
Developed technology52,959 2,959 
10,159 16,504 
Accumulated amortization (9,326)(14,852)
$833 $1,652 

Amortization related to intangible assets was as follows (in thousands):
Year Ended December 31,
 202420232022
Amortization expense$820 $2,410 $2,879 

Estimated amortization expense for future years is as follows (in thousands):
2025$484 
2026349 
Thereafter— 
$833 

Goodwill
The carrying amount of goodwill by segment was as follows (in thousands):
Laser ProductsAdvanced DevelopmentTotals
Balance, December 31, 2022$2,128 $10,248 $12,376 
Currency exchange rate adjustment23 — 23 
Balance, December 31, 2023$2,151 $10,248 $12,399 
Currency exchange rate adjustment(45)— (45)
Balance, December 31, 2024$2,106 $10,248 $12,354 

During the fourth quarter of 2024, we performed a quantitative test for goodwill impairment and determined there was no impairment of goodwill. See Note 1, Basis of Presentation and Significant Accounting Policies, for more detail regarding the quantitative test for goodwill impairment performed.