Restructuring and Other - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2017	Apr. 03, 2016
Restructuring Cost and Reserve
Restructuring charges	$ 1,900
Lease expiration year	2020
Contingent consideration adjustment	$ 634	$ 1,173
Wireless Test
Restructuring Cost and Reserve
Lease impairment	1,300
Universal Robots
Restructuring Cost and Reserve
Contingent consideration adjustment	600	1,200
Semiconductor Test and Wireless Test
Restructuring Cost and Reserve
Severance benefit and charges	$ 600
Semiconductor Test
Restructuring Cost and Reserve
Severance benefit and charges		$ 400

Lease expiration year.

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
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- Definition

The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

+ References

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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