Employee Benefit Plans - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 09, 2018
Defined Benefit Plan Disclosure [Line Items]
Liability, defined benefit plan				$ 6,100
Accumulated other comprehensive (income) loss, defined benefit plan, after tax				$ 2,400
Expense relating to defined contribution plans	$ 9,000	$ 9,600	$ 8,200
Pensions
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, net periodic benefit cost (credit)	1,289	1,068	$ 114
Liability, defined benefit plan	1,880	964
Expected future contributions	1,100
Multiemployer Plans, Pension
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, net periodic benefit cost (credit)	$ 1,600	$ 4,600