Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2018	Sep. 28, 2019	Sep. 29, 2018
Recently Adopted Accounting Guidance [Abstract]
Right of use assets	$ 0	$ 93,103
Lease liabilities		97,930
Proceeds from sale of property and equipment		$ 486	$ 8,455
ASU 2016-02 [Member]
Recently Adopted Accounting Guidance [Abstract]
Right of use assets	91,462
Lease liabilities	95,784
Proceeds from sale of property and equipment	45,500
Cumulative effect of accounting change for adoption of ASU	$ 23,013