Goodwill and Other Intangible Assets, Net

6 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets, Net

Goodwill and Other Intangible Assets, Net

The carrying amount of goodwill was $51.7 million at both June 30, 2024 and December 31, 2023.

The gross carrying amount, accumulated amortization and net book value of intangible assets at the end of each period were as follows:

	June 30, 2024						December 31, 2023
(in millions)	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Customer relationships	$	43.2	$	(32.2)	$	11.0	$	43.2	$	(30.9)	$	12.3
Internal-use software	47.5		(14.6)		32.9		43.1		(13.9)		29.2
Developed technology	27.4		(4.0)		23.4		27.4		(3.0)		24.4
Patents	36.2		(5.0)		31.2		36.2		(3.4)		32.8
Total intangible assets	$	154.3	$	(55.8)	$	98.5	$	149.9	$	(51.2)	$	98.7

Amortization expense for intangible assets was $2.4 million and $2.7 million for the three months ended June 30, 2024 and 2023, respectively, and was $4.8 million and $5.1 million for the six months ended June 30, 2024 and 2023, respectively.