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Restructuring Costs for Precision Motion and Technologies Segment Related to Germany Restructuring (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	11 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012 GERMANY	Sep. 30, 2011 GERMANY	Sep. 28, 2012 GERMANY	Sep. 30, 2011 GERMANY	Sep. 28, 2012 GERMANY Precision Motion and Technologies	Sep. 28, 2012 GERMANY Precision Motion and Technologies	Sep. 28, 2012 GERMANY Precision Motion and Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,728	$ 14	$ 7,396	$ 74	$ 43	$ 14	$ 59	$ 74	$ 43	$ 59	$ 4,750

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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