Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended
	Jun. 29, 2014 years	Mar. 30, 2014	Dec. 29, 2013	Jun. 29, 2014 Enzo Biochem, Inc. Complaint [Member]	Jun. 29, 2014 Enzo Biochem, Inc. Complaint [Member]	Sep. 28, 2014 Subsequent Event [Member]
Loss Contingencies [Line Items]
Legal Fees				$ 0.1	$ 3.4
Litigation Settlement, Amount						7.0
Loss Contingency Accrual		3.7
Management's estimate of total cost of ultimate disposition	$ 12.0		$ 13.5
Number of years over which estimated environmental cost will be paid	10