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Intangible Assets and Goodwill
 6 Months Ended
Jun. 30, 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
 June 30, 2024December 31, 2023
Patents
3 - 5
$— $6,345 
Development programs
2 - 4
7,200 7,200 
Developed technology52,959 2,959 
10,159 16,504 
Accumulated amortization (9,029)(14,852)
$1,130 $1,652 

Amortization related to intangible assets was as follows (in thousands):
Three Months Ended June 30,Six Months Ended June 30,
 2024202320242023
Amortization expense$149 $609 $522 $1,263 

Estimated amortization expense for future years is as follows (in thousands):
2024$297 
2025484 
2026349 
Thereafter— 
$1,130 

Goodwill
The carrying amount of goodwill by segment was as follows (in thousands):
Laser ProductsAdvanced DevelopmentTotals
Balance, December 31, 20232,151 10,248 12,399 
Currency exchange rate adjustment(22)— (22)
Balance, June 30, 2024$2,129 $10,248 $12,377