Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 6,400,000	$ 6,900,000
LIFO Inventory Amount	22,200,000	18,600,000
Percentage of LIFO Inventory	14.00%	15.00%
Depreciation	8,700,000	6,900,000	5,900,000
Finite-Lived Intangible Assets, Amortization Expense	17,000,000	12,200,000	10,600,000
Foreign Currency Transaction Gain (Loss), before Tax	(3,700,000)	200,000	200,000
Costs in Excess of Billings on Uncompleted Contracts or Programs	8,200,000	1,900,000
Research and Development Expense	14,100,000	10,400,000	7,700,000
Share-based Compensation	11,984,000	18,133,000	14,682,000
Tax benefit	4,600,000	7,100,000	5,800,000
Total unrecognized compensation	13,100,000
Weighted average life	2 years
Weighted average number diluted shares outstanding (shares)	329,000	536,000	536,000
Interest Paid	8,000,000	7,800,000	7,600,000
Income Taxes Paid	49,000,000	32,300,000	34,300,000
Restricted Stock [Member]
Significant Accounting Policies [Line Items]
Fair value of grants issued during the period	$ 0	$ 34,700,000	$ 0
Grant awards issued (shares)	0	386,000	0
Grant awards, fair value per share at date of grant (usd per share)	$ 0.00	$ 89.98