Related-Party Transactions (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Related Party Transaction [Line Items]
Amount paid for property			$ 151,751	$ 223,939	$ 240,417
Drivertech, LLC [Member]
Related Party Transaction [Line Items]
Ownership interest, as a percent		20.73%	20.73%
Limited Liability Company [Member]
Related Party Transaction [Line Items]
Notes payable, related parties					25,500
Repayment of related party debt	$ 26,600
Paid-in-kind interest	8,600
NMLH [Member]
Related Party Transaction [Line Items]
Number of stockholders | item				2
Amount of transaction				$ 500	900
Amount paid for property	$ 7,500
Drivertech, LLC [Member]
Related Party Transaction [Line Items]
Number of stockholders | item			2
Amount of transaction			$ 2,400	1,500	1,500
Ownership interest, as a percent		32.73%	32.73%
Parker Global Enterprises, Inc. [Member]
Related Party Transaction [Line Items]
Revenue from related parties			$ 200	200	200
Arnold [Member]
Related Party Transaction [Line Items]
Lessor, Operating Lease, Term of Contract		10 years	10 years
Proceeds from leases			$ 400	400	$ 400
Accounts Receivable, Related Parties		$ 5,000	5,000
Increase (Decrease) in Notes Receivable, Related Parties			2,000
Provision for losses on receivables		6,800
Notes Receivable, Related Parties		$ 200	$ 200	$ 3,100