Insurance - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Discount rate for self-insurance claims reserves	1.62%	2.46%
Health insurance liability	$ 2.4	$ 3.1
Workers' compensation liability	28.1	21.4
General and automobile liability	19.9	18.6
Accrued expenses
Concentration Risk [Line Items]
General and automobile liability	17.2	$ 16.4
General Liability
Concentration Risk [Line Items]
Self insurance exposures	0.5
Automobile
Concentration Risk [Line Items]
Self insurance exposures	1.0
Workers' Compensation
Concentration Risk [Line Items]
Self insurance exposures	$ 0.8