OTHER INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2019

Intangible Assets, Net (Excluding Goodwill) [Abstract]

OTHER INTANGIBLE ASSETS, NET

8. OTHER INTANGIBLE ASSETS, NET

Intangible assets are generally the result of acquisitions and consist primarily of purchased technology, customer related intangibles, and trademarks. Intangible assets are amortized over useful lives that generally range between 1 and 20 years.

The following tables present the cumulative composition of the Corporation’s intangible assets as of December 31, 2019 and December 31, 2018, respectively.

	2019						2018
(In thousands)	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Technology	$	257,676	$	(140,390)	$	117,286	$	238,212	$	(123,156)	$	115,056
Customer related intangibles	434,492		(215,855)		218,637		358,832		(193,455)		165,377
Programs (1)	144,000		(12,600)		131,400		144,000		(5,400)		138,600
Other intangible assets	43,729		(31,145)		12,584		40,340		(29,806)		10,534
Total	$	879,897	$	(399,990)	$	479,907	$	781,384	$	(351,817)	$	429,567

⁽¹⁾ Programs include values assigned to major programs of acquired businesses and represent the aggregate value associated with the customer relationships, contracts, technology, and trademarks underlying the associated program.

During the year ended December 31, 2019, the Corporation acquired intangible assets of $94.4 million which included Customer-related intangibles of $73.3 million, Technology of $17.7 million, and Other intangible assets of $3.4 million. The weighted average amortization periods for these aforementioned intangible assets are 14.1 years, 15.0 years, and 8.0 years, respectively.

Amortization expense for the years ended December 31, 2019, 2018, and 2017 was $45.0 million, $43.6 million, and $38.4 million, respectively. The estimated future amortization expense of intangible assets over the next five years is as follows:

(In thousands)
2020	$	55,360
2021	45,692
2022	43,149
2023	39,398
2024	36,010