Commitment and Contingencies - Performance Bonds and Letters of Credit (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 31, 2019
Loss Contingencies
Self-insurance workers’ compensation	$ 23,638	$ 23,638
Legal	48,561	48,561
Liability and other insurance	16,678	16,678
Environmental	8,286	8,186
Other	6,504	5,864
Total outstanding performance bonds and stand-by letters of credit	$ 103,667	102,927
Steve and Sons
Loss Contingencies
Total outstanding performance bonds and stand-by letters of credit		$ 47,700