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Goodwill and other identifiable intangible assets

6 Months Ended

Jun. 27, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and other identifiable intangible assets

Changes in goodwill during the first half ended June 27, 2021, were as follows:


In millions	Gas Cylinders		Elektron		Total
At January 1, 2021	$	27.9	$	42.3	$	70.2
Additions	2.4		—		2.4
Exchange difference	0.5		0.2		0.7
Net balance at June 27, 2021	$	30.8	$	42.5	$	73.3

Identifiable intangible assets consisted of the following:


	June 27, 2021						December 31, 2020
In millions	Gross		Accumulated amortization		Net		Gross		Accumulated amortization		Net
Customer relationships	$	13.4	$	(5.4)	$	8.0	$	13.4	$	(5.2)	$	8.2
Technology and trading related	8.5		(4.0)		4.5		8.3		(3.7)		4.6
	$	21.9	$	(9.4)	$	12.5	$	21.7	$	(8.9)	$	12.8

Identifiable intangible asset amortization expense was $0.4 million and $0.4 million for the first half of 2021 and 2020 respectively.

Intangible asset amortization expense during the remainder of 2021 and over the next five years is expected to be approximately $0.3 million in 2021, $0.7 million in 2022, $0.7 million in 2023, $0.7 million in 2024, $0.7 million in 2025 and $0.7 million in 2026.