Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended				6 Months Ended	24 Months Ended	3 Months Ended
	Jul. 01, 2012 Inventory [Member]	Jul. 01, 2012 Scotland EMS Manufacturing Facility [Member] Damage from fire [Member]	Jul. 01, 2012 Scotland EMS Manufacturing Facility [Member] Damage from fire [Member]	Jul. 03, 2011 Scotland EMS Manufacturing Facility [Member] Damage from fire [Member]	Jul. 03, 2011 Scotland EMS Manufacturing Facility [Member] Damage from fire [Member] Inventory [Member]	Jul. 03, 2011 Scotland EMS Manufacturing Facility [Member] Damage from fire [Member] Machinery and equipment [Member]	Jul. 01, 2012 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member]	Dec. 31, 2011 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member]	Jul. 01, 2012 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member]	Dec. 31, 2011 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member]	Jul. 01, 2012 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member] Inventory [Member]	Dec. 31, 2011 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member] Inventory [Member]	Dec. 31, 2011 Thailand EMS Manufacturing Facility [Member] Damage from flood [Member] Machinery and equipment [Member]
Contingencies (Textual) [Abstract]
Net book value of assets damaged					$ 1.6	$ 0.2					$ 0.3	$ 0.5	$ 0.5
Value of insurance converge deducted				0.1
Reimbursement for business interruption		0.2	1.0				7.2		11.6
Reimbursement for business interruption incurred in earnings		0.2	0.9				7.2		10.2
Insurance consultation fees			0.1
Fixed costs incurred at facility								2.5
Reimbursement of costs related to property damage	0.3								3.1
Reimbursement of insurance claim by cash							7.5		14.7	2.4
Reimbursement of costs related to property damage incurred in earnings									$ 1.8