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Intangible Assets and Goodwill (Tables)
 3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets
The details of amortizing intangible assets are as follows (in thousands, except for estimated useful lives):
Estimated useful life
(in years) 		As of
 March 31, 2021December 31, 2020
Patents
3 - 5
$6,261 $6,199 
Development programs
2 - 4
7,200 7,200 
Developed technology51,226 1,226 
14,687 14,625 
Accumulated amortization (7,278)(6,280)
$7,409 $8,345 
Schedule of Estimated Future Amortization Expense Estimated amortization expense for future years is as follows (in thousands):
Remainder of 2021$2,878 
20222,357 
20231,674 
2024364 
2025136 
$7,409 
Schedule of Goodwill
The carrying amount of goodwill by segment was as follows (in thousands):
Laser ProductsAdvanced DevelopmentTotals
Balance, December 31, 2020$2,236 $10,248 $12,484 
Currency exchange rate adjustment(37)— (37)
Balance, March 31, 2021$2,199 $10,248 $12,447