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Intangible Assets and Goodwill (Tables)
9 Months Ended
Sep. 30, 2020
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
 September 30, 2020December 31, 2019
Patents
3 - 5
$6,689 $5,956 
Development programs
2 - 4
7,200 7,200 
Developed technology51,171 — 
15,060 13,156 
Accumulated amortization (5,972)(3,150)
$9,088 $10,006 
Schedule of Goodwill
The carrying amount of goodwill by segment was as follows (in thousands):
Laser ProductsAdvanced DevelopmentTotals
Balance, December 31, 2019$1,388 $8,484 $9,872 
Business acquisition869 — 869 
Purchase accounting adjustment— 1,767 1,767 
Currency exchange rate adjustment(5)— (5)
Balance, September 30, 2020$2,252 $10,251 $12,503