Income Taxes - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2011
Income Taxes [Line Items]
Deferred income tax assets, net operating loss carryforwards	$ 15.0		$ 14.9
Deferred tax assets, valuation allowance	12.0		11.8
Effective tax rate	25.10%	27.90%
SWITZERLAND
Income Taxes [Line Items]
Income tax holiday, aggregate dollar amount	0.7	0.7
Income tax holiday, income tax benefits per share	$ 0.04	0.04
SINGAPORE
Income Taxes [Line Items]
Income tax holiday, aggregate dollar amount	$ 0.3	0.3
Income tax holiday, income tax benefits per share	$ 0.02	0.02
Tax holiday granted by Singapore economic development board, duration in years	4
Tax holiday granted by Singapore economic development board, extension duration in years	6