Transactions with Affiliates (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) truck	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Transactions with Affiliates [Abstract]
Billings to affiliates	$ 560,119	$ 263,987	$ 1,355,534	$ 743,634
Asset acquisition			0	9,163
Affiliated entities
Transactions with Affiliates [Abstract]
Affiliate billings to us	1	(15)	13	17
Billings to affiliates	4	1	10	3
Rentals paid to affiliate	$ 144	$ 256	$ 461	$ 500
Number of pickup tracks purchased | truck	10
Asset acquisition	$ 500