Restructuring and Other - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 29, 2020	Mar. 31, 2019
Restructuring Cost and Reserve
Contingent consideration adjustment	$ (10,020)	$ 2,970
Semiconductor Test
Restructuring Cost and Reserve
Contingent consideration adjustment	10,000	3,000
Severance benefit and charges	1,400	1,300
Impairment charges fixed assets	$ 700	$ 800

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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