Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 29, 2014	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts		$ 9,100,000	$ 7,000,000
LIFO Inventory Amount		30,200,000	22,300,000
Percentage of LIFO Inventory		11.80%	10.10%
Depreciation		15,500,000	13,500,000	8,700,000
Finite-Lived Intangible Assets, Amortization Expense		24,600,000	28,500,000	17,000,000
Foreign Currency Transaction Gain (Loss), before Tax		3,600,000	3,100,000	(3,700,000)
Costs in Excess of Billings on Uncompleted Contracts or Programs		12,700,000	17,200,000
Research and Development Expense		22,600,000	21,400,000	14,100,000
Share-based Compensation		16,690,000	11,862,000	11,984,000
Tax benefit		6,300,000	4,400,000	4,600,000
Total unrecognized compensation		16,000,000
Weighted average life		1 year 11 months 23 days
Weighted average number diluted shares outstanding (shares)		20,000	317,000	430,000
Interest Paid		14,800,000	14,100,000	8,000,000
Income Taxes Paid		43,500,000	49,500,000	49,000,000
Restricted Stock [Member]
Significant Accounting Policies [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	369,807
Fair value of grants issued during the period		$ 32,500,000		$ 0
Grant awards issued (shares)		369,807	0
Grant awards, fair value per share at date of grant (usd per share)		$ 87.80	$ 0.00