Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 04, 2020	Dec. 31, 2019
Finance leases:
Other assets	$ 0	$ 1,384
Accrued liabilities	0	1,384
Operating leases:
Operating lease ROU assets	65,579	70,225
Operating lease liabilities	21,687	23,511
Long-term operating lease liabilities	61,410	67,902
Total operating lease liabilities	$ 83,097	$ 91,413
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Finance Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent