Commitments and Contingencies - Schedule of Contributions made to Multiemployer Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Multiemployer Plans [Line Items]
Contributions	$ 14,114	$ 13,514	$ 12,442
Pension Plans
Multiemployer Plans [Line Items]
Contributions	3,418	3,327	3,035
Pension Plans | Multiemployer Plan, Individually Insignificant Multiemployer Plans
Multiemployer Plans [Line Items]
Contributions	1,000	1,000	900
Health Plans
Multiemployer Plans [Line Items]
Contributions	10,055	9,373	8,551
Health Plans | Multiemployer Plan, Individually Insignificant Multiemployer Plans
Multiemployer Plans [Line Items]
Contributions	1,800	1,600	1,600
Other
Multiemployer Plans [Line Items]
Contributions	641	814	856
Other | Multiemployer Plan, Individually Insignificant Multiemployer Plans
Multiemployer Plans [Line Items]
Contributions	$ 400	$ 200	$ 200