Goodwill and Other Intangibles

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill were as follows:


	Dispensing and Specialty Closures		Metal Containers		Custom Containers		Total
	(Dollars in thousands)
Balance at December 31, 2020	$	1,396,191	$	117,938	$	227,367	$	1,741,496
Acquisitions	346,916		—		—		346,916
Currency translation	(46,610)		(2,869)		100		(49,379)
Balance at September 30, 2021	$	1,696,497	$	115,069	$	227,467	$	2,039,033

In connection with our acquisitions of Silgan Specialty Packaging and Unicep as discussed in Note 3, we recognized goodwill of $343.5 million.

The components of other intangible assets, net were as follows:


	Sept. 30, 2021				Dec. 31, 2020
	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
	(Dollars in thousands)
Definite-lived intangibles:
Customer relationships	$	926,566	$	(163,998)	$	711,065	$	(147,014)
Other	81,339		(36,715)		72,689		(31,672)
	1,007,905		(200,713)		783,754		(178,686)
Indefinite-lived intangibles:
Trade names	32,140		—		32,140		—
	$	1,040,045	$	(200,713)	$	815,894	$	(178,686)

In connection with our acquisitions of Silgan Specialty Packaging and Unicep as discussed in Note 3, we recognized intangible assets for customer relationships of $238.0 million, technology know-how of $7.4 million and a trade name of $3.7 million.

Amortization expense was $10.5 million and $31.1 million for the three and nine months ended September 30, 2021, respectively, and $10.4 million and $25.4 million for the three and nine months ended September 30, 2020, respectively. Amortization expense is expected to be $45.1 million, $52.8 million, $52.7 million, $52.7 million and $48.7 million for the years ended December 31, 2021 through 2025, respectively.