Nature of Business and Significant Accounting Policies (Details 1)	12 Months Ended
	Dec. 29, 2012
Leaseholds and Leasehold Improvements [Member]
Useful life description	Until the end of the lease term
Computer Equipment [Member] | MinimumMember
Useful life	3 years
Computer Equipment [Member] | MaximumMember
Useful life	5 years
Furniture and Fixtures [Member]
Useful life	7 years
LaboratoryEquipment [Member]
Useful life	10 years