Goodwill and Other Intangible Assets - Net

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS - Net

GOODWILL AND OTHER INTANGIBLE ASSETS—Net

Goodwill

The following table presents the changes in the carrying amount of goodwill (in millions):

	Amount
Balance—December 2019	$	67.2
Addition due to business combination	1.0
Balance—September 2020	$	68.2

There were no impairments to goodwill during the nine months ended September 30, 2020 or during prior periods.

Other Intangible Assets—Net

The following tables present other intangible assets—net as of September 30, 2020 and December 31, 2019 (in millions, except years):

	September 30, 2020
	Weighted-Average Useful Life (in Years)	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Finite-lived intangible assets:
Developed technologies	4.0	$	53.3	$	30.2	$	23.1
Customer relationships	4.1	21.8		19.6		2.2
Total other intangible assets—net		$	75.1	$	49.8	$	25.3

	December 31, 2019
	Weighted-Average Useful Life (in Years)	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Finite-lived intangible assets:
Developed technologies	4.0	$	50.2	$	24.6	$	25.6
Customer relationships	4.1	21.6		16.1		5.5
Total other intangible assets—net		$	71.8	$	40.7	$	31.1

Amortization expense was $2.8 million and $2.2 million during the three months ended September 30, 2020 and September 30, 2019, respectively. Amortization expense was $10.5 million and $8.1 million during the nine months ended September 30, 2020 and September 30, 2019, respectively.

The following table summarizes estimated future amortization expense of finite-lived intangible assets—net (in millions):

	Amount
Years:
2020 (the remainder of 2020)	$	2.7
2021	9.6
2022	7.5
2023	4.8
2024	0.7
Total	$	25.3