Leases Net Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Leases [Abstract]
cec_CAMexpenses	$ 13,854	$ 0	$ 0
Operating Leases, Rent Expense	109,043	$ 96,484	$ 95,917
cec_Operating Leases, G&A Expense	1,303
Finance Lease, Right-of-Use Asset, Amortization	990
Finance Lease, Interest Expense	1,485
Lease, Cost	$ 112,821