Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Acquired Intangible Assets

The following table summarizes acquired intangible assets at December 31 as follows:

		2020				2019
(In thousands)	Weighted Average Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Patents	11 years	$	2,146	$	1,891	$	2,146	$	1,804
Non-compete Agreement	4 years	11,082		10,085		11,318		7,696
Trade Names	10 years	11,512		7,537		11,438		6,550
Completed and Unpatented Technology	9 years	48,043		25,766		48,201		21,196
Customer Relationships	15 years	142,478		60,096		142,212		50,776
Total Intangible Assets	12 years	$	215,261	$	105,375	$	215,315	$	88,022

Summary of Future Amortization Expense for Intangible Assets

Based upon acquired intangible assets at December 31, 2020, amortization expense for each of the next five years is estimated to be:

(In thousands)
2021	$	15,336
2022	$	14,904
2023	$	13,871
2024	$	12,849
2025	$	10,929