Goodwill and Other Intangible Assets, Net

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets, Net

Goodwill and Other Intangible Assets, Net

The carrying amount of goodwill was $39.8 million at both September 30, 2021 and December 31, 2020.

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

	September 30, 2021						December 31, 2020
(in millions)	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Customer relationships	$	43.3	$	(22.1)	$	21.2	$	43.3	$	(18.3)	$	25.0
Internal-use software	24.5		(9.8)		14.7		11.4		(8.6)		2.8
Intellectual property	1.6		(0.3)		1.3		1.1		(0.2)		0.9
Total intangible assets	$	69.4	$	(32.2)	$	37.2	$	55.8	$	(27.1)	$	28.7

Amortization expense for intangible assets was $1.6 million and $0.7 million for the three months ended September 30, 2021 and 2020, respectively. Amortization expense for intangible assets was $5.1 million and $2.2 million for the nine months ended September 30, 2021 and 2020, respectively.