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Restructuring and Other - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013 System Test and Semiconductor Test
Restructuring Cost and Reserve
Restructuring charges	$ 0
Severance benefit and charges		400,000
Accrual balance for severance and benefits	$ 210,000

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.

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- Definition

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.

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