Income Taxes - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 31, 2012
Income Taxes [Line Items]
Deferred income tax assets, net operating loss carryforwards	$ 14.8		$ 14.8
Deferred tax assets, valuation allowance	11.8		11.8
Effective tax rate	18.40%	22.10%
Reduction in income tax rate related to tax benefit of exercise of employee stock option	1.40%	5.00%
Discrete tax benefit percentage	7.50%
Switzerland
Income Taxes [Line Items]
Income tax holiday, aggregate dollar amount	0.4	0.3
Income tax holiday, income tax benefits per share	$ 0.03	0.02
Singapore
Income Taxes [Line Items]
Income tax holiday, aggregate dollar amount		0.1
Income tax holiday, income tax benefits per share		0.01
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