Commitments and Contingencies (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Loss Contingencies [Line Items]
Sales and use tax audit, accrual	$ 5,100,000
Interest expense	10,756,000	$ 11,283,000
Self insurance deductible for workers compensation	4,000,000.0
Self insurance deductible for general liability claims	1,000,000.0
Self insurance deductible for medical coverage	400,000
Self insurance deductible for automobile liability	1,000,000.0
Short-term self-insured risk reserves	7,200,000		$ 6,700,000
Long-term self-insured risk reserves	16,300,000		$ 16,300,000
Sales and Use Tax Audit
Loss Contingencies [Line Items]
Interest expense	300,000
Sales and Use Tax Audit | Minimum
Loss Contingencies [Line Items]
Sales and use tax, estimate of possible liability	6,000,000.0
Sales and Use Tax Audit | Maximum
Loss Contingencies [Line Items]
Sales and use tax, estimate of possible liability	$ 24,000,000.0