Unaudited Condensed Consolidated Statement of Stockholders' Equity (Deficit) - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Issuance of Class A Stock [Member] Common Stock [Member] Common Class A [Member]	Issuance of Class A Stock [Member] Common Stock [Member] Common Class B [Member]	Issuance of Class A Stock [Member] Additional Paid-in Capital [Member]	Issuance of Class A Stock [Member] Retained Earnings [Member]	Issuance of Class A Stock [Member] Noncontrolling Interest [Member]	Issuance of Class A Stock [Member] Redeemable Restricted Units [Member]	Issuance of Class A Stock [Member]	Issuance of Class B Stock [Member] Common Stock [Member] Common Class A [Member]	Issuance of Class B Stock [Member] Common Stock [Member] Common Class B [Member]	Issuance of Class B Stock [Member] Additional Paid-in Capital [Member]	Issuance of Class B Stock [Member] Retained Earnings [Member]	Issuance of Class B Stock [Member] Noncontrolling Interest [Member]	Issuance of Class B Stock [Member] Redeemable Restricted Units [Member]	Issuance of Class B Stock [Member]	Issuance of Class A stock, Two [Member] Common Stock [Member] Common Class A [Member]	Issuance of Class A stock, Two [Member] Common Stock [Member] Common Class B [Member]	Issuance of Class A stock, Two [Member] Additional Paid-in Capital [Member]	Issuance of Class A stock, Two [Member] Retained Earnings [Member]	Issuance of Class A stock, Two [Member] Noncontrolling Interest [Member]	Issuance of Class A stock, Two [Member] Redeemable Restricted Units [Member]	Issuance of Class A stock, Two [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Redeemable Restricted Units [Member]	Total
Balance at Dec. 31, 2017																						$ 64		$ 1	$ (43,459)	$ 2,289	$ 3,281	$ (41,105)
Share based compensation																								965			391	965
Adoption of ASC 606 at Dec. 31, 2017																									1,459			1,459
Cancel 6,384,877 US Xpress Enterprises shares																						(64)			64
Issuance of 16,046,624 shares of Class A Stock in Reorganization	$ 160		$ (11)	$ (149)					$ 155	$ (6)	$ (149)				$ 167		$ 246,517				$ 246,684
Transfer from temporary equity to permanent equity																								3,455			(3,455)	3,455
Vesting of 96,446 restricted units																						1		(1)
Dividend of repurchased membership units																											(217)
Net income																									17,903	972		18,875
Balance at Sep. 30, 2018																						$ 328	$ 155	$ 250,920	$ (24,331)	$ 3,261		$ 230,333