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Restructuring, Asset Impairments and Other Charges, net (Tables)

12 Months Ended

Dec. 31, 2019

Restructuring Charges [Abstract]

Summary of Restructuring, Asset Impairments and Other, Net

Summarized activity included in the “Restructuring, asset impairments and other charges, net” caption on the Company's Consolidated Statements of Operations and Comprehensive Income for the years ended December 31, 2019, 2018 and 2017 is as follows (in millions):

						Restructuring						Asset Impairments (1)						Other (2)						Total
Year Ended December 31, 2019
General workforce reduction						$	8.4					$	—					$	—					$	8.4
Post-Quantenna acquisition restructuring						15.7						—						—						15.7
Other						0.8						3.4						0.4						4.6
Total						$	24.9					$	3.4					$	0.4					$	28.7
Year Ended December 31, 2018
Other						$	3.9					$	4.6					$	(4.2)					$	4.3
Total						$	3.9					$	4.6					$	(4.2)					$	4.3
Year Ended December 31, 2017
Post-Fairchild acquisition restructuring costs						$	9.7					$	—					$	—					$	9.7
Manufacturing relocation						(2.1)						—						—						(2.1)
Former System Solutions Group segment voluntary workforce reduction						2.2						—						—						2.2
Other						0.1						7.3						3.6						11.0
Total						$	9.9					$	7.3					$	3.6					$	20.8

_______________________

(1) Includes, among others, impairment charges for ROU assets of $2.5 million, asset impairment charges of $4.6 million, and held-for-sale asset impairment charges of $7.3 million for the years ended December 31, 2019, 2018 and 2017, respectively.

(2) Includes gain on sale of certain held-for-sale assets for the year ended December 31, 2018 and charges related to other facility closures and asset disposal activities for the year ended December 31, 2017.

Rollforward of Accrued Restructuring Charges

Summary of changes in accrued restructuring charges as follows (in millions):

						Estimated employee separation charges						Estimated costs to exit						Total
Balance as of December 31, 2017						$	1.9					$	0.2					$	2.1
Charges						3.9						—						3.9
Usage						(5.5)						—						(5.5)
Balance as of December 31, 2018						$	0.3					$	0.2					$	0.5
Charges						24.9						—						24.9
Usage						(25.1)						(0.1)						(25.2)
Balance as of December 31, 2019						$	0.1					$	0.1					$	0.2

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No definition available.

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- Definition

Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.P.3)
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-Name Accounting Standards Codification
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- Definition

Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
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