Right-of-Use ("ROU") Assets and Lease Liabilities - Operating and Finance Lease Liability (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) renewal_option	Dec. 31, 2019 USD ($)
Leases [Abstract]
Number of renewal options | renewal_option	1
Operating leases:
Right-of-use asset	$ 121,700	$ 120,562
Operating lease liability	121,456	120,068
Finance leases included in property and equipment, net:
Vehicle and equipment ROU assets, gross	8,941	9,204
Accumulated depreciation	(3,059)	(2,562)
Total finance ROU assets, net	5,882	6,642
Total finance lease liabilities	6,513	7,384
Real Estate
Operating leases:
Operating lease, right-of-use asset, gross	136,183	130,746
Accumulated amortization	(30,778)	(24,743)
Right-of-use asset	105,405	106,003
Operating lease liability	105,227	105,559
Vehicles and equipment
Operating leases:
Operating lease, right-of-use asset, gross	19,973	17,416
Accumulated amortization	(3,678)	(2,857)
Right-of-use asset	16,295	14,559
Operating lease liability	16,229	14,509
United States
Operating leases:
Right-of-use asset	108,091	104,938
Operating lease liability	107,745	104,356
Finance leases included in property and equipment, net:
Vehicle and equipment ROU assets, gross	6,301	6,341
Accumulated depreciation	(2,299)	(1,892)
Total finance ROU assets, net	4,002	4,449
Total finance lease liabilities	4,252	4,777
United States | Real Estate
Operating leases:
Operating lease, right-of-use asset, gross	120,607	114,202
Accumulated amortization	(26,651)	(21,337)
Right-of-use asset	93,956	92,865
Operating lease liability	93,665	92,319
United States | Vehicles and equipment
Operating leases:
Operating lease, right-of-use asset, gross	17,481	14,665
Accumulated amortization	(3,346)	(2,592)
Right-of-use asset	14,135	12,073
Operating lease liability	14,080	12,037
Canada
Operating leases:
Right-of-use asset	13,609	15,624
Operating lease liability	13,711	15,712
Finance leases included in property and equipment, net:
Vehicle and equipment ROU assets, gross	2,640	2,863
Accumulated depreciation	(760)	(670)
Total finance ROU assets, net	1,880	2,193
Total finance lease liabilities	2,261	2,607
Canada | Real Estate
Operating leases:
Operating lease, right-of-use asset, gross	15,576	16,544
Accumulated amortization	(4,127)	(3,406)
Right-of-use asset	11,449	13,138
Operating lease liability	11,562	13,240
Canada | Vehicles and equipment
Operating leases:
Operating lease, right-of-use asset, gross	2,492	2,751
Accumulated amortization	(332)	(265)
Right-of-use asset	2,160	2,486
Operating lease liability	$ 2,149	$ 2,472