Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue
Total revenue	$ 52,389	$ 47,256	$ 160,066	$ 112,083
Operating expenses
Payroll, benefits and related	25,404	26,362	78,135	55,632
Purchased transportation	7,546	4,559	23,023	18,702
Fuel	5,023	5,240	16,948	13,932
Equipment rent	2,086	3,846	7,743	10,058
Maintenance and supplies	2,263	3,613	7,753	8,312
General and administrative	4,858	4,645	14,086	8,740
Operating supplies and expenses	3,705	2,866	11,722	6,394
Depreciation and amortization	3,816	2,036	10,931	4,794
Insurance and claims	2,077	2,193	7,617	4,804
Change in fair value of contingent consideration			296
Total operating expenses	56,873	55,117	178,640	131,933
Operating loss	(4,484)	(7,861)	(18,574)	(19,850)
Other income (expense)
Interest expense	(3,083)	(2,172)	(10,148)	(4,639)
Change in fair value of embedded derivative liability	815		661
Realized and unrealized gains on derivative liability, net				11
Change in fair value of warrant liabilities	(1,726)		5,534
Gain on conversion of accounts payable - related party		173		173
Loss on extinguishment of debt	46		(10,010)
Other miscellaneous income	34	79	34	79
Total other expense	(3,914)	(1,920)	(13,929)	(4,376)
Loss before income taxes	(8,398)	(9,781)	(32,503)	(24,226)
(Provision) benefit for income taxes	(37)	5,565	(142)	5,565
Net loss	(8,435)	(4,216)	(32,645)	(18,661)
Accrued and undeclared preferred stock dividends in arrears	164	9	368	18
Issuance of warrants as deemed dividend - related party			455
Net loss available to common stockholders	$ (8,599)	$ (4,225)	$ (33,468)	$ (18,679)
Basic and diluted weighted average common shares outstanding	20,270,915	12,732,285	19,906,638	8,578,215
Basic and diluted net loss per common share	$ (0.42)	$ (0.33)	$ (1.68)	$ (2.18)
Trucking [Member]
Revenue
Total revenue	$ 52,133	$ 47,159	$ 159,258	$ 111,375
CNG [Member]
Revenue
Total revenue	256	97	808	708
Operating expenses
CNG expenses	$ 95	$ (243)	$ 386	$ 565