Leases Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Thousands	Mar. 29, 2020	Dec. 31, 2019
Leases [Abstract]
Total operating lease right-of-use assets	$ 58,960	$ 62,251
Accrued liabilities	13,626	13,900
Long-term operating lease liabilities	52,084	55,652
Total operating lease liabilities	65,710	69,552
Other long-lived assets, at cost	748	823
Accumulated depreciation	(392)	391
Other long-lived assets, net	$ 356	$ 432