Guarantees and Other Commitments and Contingencies IT Services Agreement (Details) - IT Services Agreement $ in Thousands	12 Months Ended
	Dec. 29, 2019 USD ($)
Long-term Purchase Commitment
Purchase Obligation, Purchases During Period	$ 1,386
Purchase Obligation, Due in Next Twelve Months	16,800
Purchase Obligation, Due in Second Year	17,200
Purchase Obligation, Due in Third Year	15,400
Purchase Obligation, Due in Fourth Year	13,000
Purchase Obligation, Due in Fifth Year	12,200
Accrued Liabilities
Long-term Purchase Commitment
Amount Due from (to) Vendors for Purchase and Capital Commitments	$ (1,046)