Acquired Intangible Assets

6 Months Ended

Jun. 30, 2020

Acquired Intangible Assets [Abstract]

Note 7. Acquired Intangible Assets

Acquired identifiable intangible assets consist of the following:

	June 30, 2020			December 31, 2019
	(In thousands)
Customer relationships	$	111,409		$	111,692
Trademarks and trade names		6,980			6,980
Non-compete agreements		3,264			3,276
Patents		723			723
Supply agreements		800			800
Leaseholds		160			160
Total acquired intangible assets		123,336			123,631
Less accumulated amortization (1)		(63,435	)		(59,431	)
Net acquired intangible assets	$	59,901		$	64,200

(1)

Applies to all intangible assets, except for trademarks and trade names totaling $5.2 million, which have indefinite useful lives and, as such, are not being amortized.

Total amortization expense for acquired intangible assets was $2 million and $4.1 million for the three months and six months ended June 30, 2020, respectively, and $2.1 million and $3.9 million for the comparable periods in 2019. Based on the current estimated useful lives assigned to our intangible assets, amortization expense is estimated to be $4.1 million for the remainder of 2020, $6.8 million in 2021, $5.2 million in 2022, $4.9 million in 2023 and $33.7 million in the aggregate for the years 2024 through 2034.