Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Apr. 04, 2020	Dec. 31, 2019
Finance leases:
Other assets	$ 1,215	$ 1,384
Accrued liabilities	1,384	1,384
Operating leases:
Operating lease ROU assets	70,137	70,225
Operating lease liabilities	21,832	23,511
Long-term operating lease liabilities	66,234	67,902
Total operating lease liabilities	$ 88,066	$ 91,413