Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid during the period for:
Interest	$ 22,955	$ 26,977
Income taxes	(53)	(119)
Non-cash investing activities:
Leasehold improvements paid by lessor	24	1,540
Vehicles transferred to property and equipment from inventory	119	402
Capital expenditures in accounts payable and accrued liabilities	$ 3,325	$ 6,634