Summary of Significant Accounting Policies (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Dec. 30, 2012
Quarterly operating cycle (in weeks)	P13W	P13W	P39W	P39W
Period of time average selling prices are observed to establish best estimate of selling price			12 months
Total notional amount of outstanding forward contract in place for foreign currency purchase	$ 49.8		$ 49.8		$ 51.2
Initial sublease term for former headquarter facility			10 years
Total minimum payments during initial term for former headquarter sublease			30.5
Letter of credit, amount	8.0		8.0
Letters of credit outstanding at end of lease term	0		0
Initial Lease Term for SF Lease			10 years
Future minimum payments during the initial term for SF lease	46.5		46.5
Instrument warranty period			1 year
Minimum [Member]
Product or service delivery period			3 months
Warranty on consumable sales through the expiration date			6 months
Maximum [Member]
Product or service delivery period			6 months
Warranty on consumable sales through the expiration date			12 months
Cost of Sales [Member]
Impairment charges - Eco and NuPCR product discontinuation	25.2
Impairments of identifiable intangible assets	$ 22.9