Restructuring and other impairment charges (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Restructuring Cost And Reserve [Line Items]
Restructuring charges		$ 3,730,000		$ 21,357,000
Impairment charges	0	3,354,000	0	7,848,000
Total restructuring and other impairment charges	1,108,000	7,084,000	16,511,000	29,205,000
Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges		1,942,000		8,986,000
Impairment charges		0		0
Total restructuring and other impairment charges	567,000	1,942,000	17,209,000	8,986,000
Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		739,000		1,350,000
Impairment charges		0		0
Total restructuring and other impairment charges	1,000	739,000	255,000	1,350,000
Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		1,032,000		7,997,000
Impairment charges		0		0
Total restructuring and other impairment charges	409,000	1,032,000	(1,286,000)	7,997,000
Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		17,000		3,024,000
Impairment charges		3,354,000		7,848,000
Total restructuring and other impairment charges	131,000	3,371,000	333,000	10,872,000
2014 Manufacturing Footprint Realignment
Restructuring Cost And Reserve [Line Items]
Restructuring charges	171,000		8,748,000
2014 Manufacturing Footprint Realignment | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges	129,000		8,706,000
2014 Manufacturing Footprint Realignment | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0		0
2014 Manufacturing Footprint Realignment | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0		0
2014 Manufacturing Footprint Realignment | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	42,000		42,000
2014 European Restructuring Plan
Restructuring Cost And Reserve [Line Items]
Restructuring charges	566,000		8,672,000
2014 European Restructuring Plan | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges	537,000		8,289,000
2014 European Restructuring Plan | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,000		1,000
2014 European Restructuring Plan | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,000		306,000
2014 European Restructuring Plan | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	27,000		76,000
2014 Restructuring Program
Restructuring Cost And Reserve [Line Items]
Restructuring charges	289,000		2,070,000
2014 Restructuring Program | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges	25,000		501,000
2014 Restructuring Program | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0		0
2014 Restructuring Program | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	202,000		1,376,000
2014 Restructuring Program | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	62,000		193,000
LMA Restructuring Program
Restructuring Cost And Reserve [Line Items]
Restructuring charges	20,000	1,768,000	(3,352,000)	8,364,000
LMA Restructuring Program | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	492,000	(29,000)	3,318,000
LMA Restructuring Program | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	162,000	(112,000)	536,000
LMA Restructuring Program | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	20,000	1,097,000	(3,211,000)	4,378,000
LMA Restructuring Program | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	17,000	0	132,000
2013 Restructuring Program
Restructuring Cost And Reserve [Line Items]
Restructuring charges	62,000	826,000	626,000	8,656,000
2013 Restructuring Program | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges	(124,000)	891,000	361,000	2,443,000
2013 Restructuring Program | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	0	0	0
2013 Restructuring Program | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	186,000	(65,000)	243,000	3,326,000
2013 Restructuring Program | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	0	22,000	2,887,000
2012 Restructuring Program
Restructuring Cost And Reserve [Line Items]
Restructuring charges		1,098,000	(265,000)	4,164,000
2012 Restructuring Program | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges		559,000	(619,000)	3,225,000
2012 Restructuring Program | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		539,000	354,000	641,000
2012 Restructuring Program | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		0	0	293,000
2012 Restructuring Program | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		0	0	5,000
2011 Restructuring Plan
Restructuring Cost And Reserve [Line Items]
Restructuring charges			12,000
2011 Restructuring Plan | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges			0
2011 Restructuring Plan | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges			12,000
2011 Restructuring Plan | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges			0
2011 Restructuring Plan | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges			0
2007 Arrow Integration Program
Restructuring Cost And Reserve [Line Items]
Restructuring charges		38,000		173,000
2007 Arrow Integration Program | Termination Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring charges		0		0
2007 Arrow Integration Program | Facility Closure Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		38,000		173,000
2007 Arrow Integration Program | Contract Termination Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		0		0
2007 Arrow Integration Program | Other Exit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges		$ 0		$ 0