Summary of Restructuring Costs and Other Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,528	$ 2,728	$ 4,694	$ 7,396
Total acquisition related charges	113		1,199
Total restructuring costs and other	1,641	2,728	5,893	7,396
Germany Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges		43	8	59
2011 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	85	974	2,316	5,626
2012 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,711		1,711
2013 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,443		$ 2,370