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Intangible Assets
 9 Months Ended
Sep. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
The following table summarizes acquired intangible assets as follows: 
September 26, 2020December 31, 2019
(In thousands)
Weighted
Average Life
Gross Carrying
Amount
Accumulated
Amortization
Gross Carrying
Amount
Accumulated
Amortization
Patents11 years$2,146 $1,869 $2,146 $1,804 
Non-compete Agreement4 years11,091 9,627 11,318 7,696 
Trade Names10 years11,467 7,290 11,438 6,550 
Completed and Unpatented Technology9 years48,250 24,633 48,201 21,196 
Customer Relationships15 years142,528 57,708 142,212 50,776 
Total Intangible Assets12 years$215,482 $101,127 $215,315 $88,022 
All acquired intangible assets other than goodwill and one trade name are being amortized. Amortization expense for acquired intangibles is summarized as follows: 
Nine Months EndedThree Months Ended
(In thousands)
September 26, 2020September 28, 2019September 26, 2020September 28, 2019
Amortization Expense
$13,024 $12,746 $4,382 $4,394 
Amortization expense for acquired intangible assets expected for 2020 and for each of the next five years is summarized as follows:
(In thousands)
2020$17,220 
2021$15,404 
2022$14,973 
2023$13,939 
2024$12,917 
2025$10,996