Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net loss	$ (32,714)	$ (6,577)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	7,838	959
Non-cash lease expense	3,233
Loss on sale of assets	190
Amortization of debt discount and debt issuance costs	1,616	502
Deferred income taxes	(5,473)
Stock option and warrant-based compensation	1,555	492
Impairment	3,616	240
Non-cash interest expense	4,552
Change in fair value of embedded derivative liability	171
Bad debt expense (recovery)	140	(37)
Realized gain on derivative liability	(11)
Gain on conversion of accounts payable to common stock	(186)	(94)
Gain on extinguishment of convertible promissory notes		(928)
Gain on conversion of convertible promissory notes to common stock		(625)
Common stock issued for services - related party	25
Common stock issued for interest	35
Warrant expenses		172
Other		25
Changes in assets and liabilities
Accounts receivable	(723)	(4,162)
Accounts receivable - related party	41
Alternative fuels tax credit receivable	(2,144)	380
Due from related party	(135)
Other assets	(1,388)	(314)
Accounts payable	1,521	70
Accounts payable - related party	(45)	77
Accrued expenses	5,923	2,321
Accrued interest - related party	559	482
Operating lease liabilities	(3,374)
Net cash used in operating activities	(15,178)	(6,783)
Cash flows from investing activities
Acquisitions, net of cash acquired	(19,482)	(186)
Purchases of equipment	(3,070)	(18)
Proceeds from sale of assets	196	34
Net cash used in investing activities	(22,356)	(170)
Cash flows from financing activities
Line-of-credit, net		(105)
Proceeds from sale of common stock and warrants	11,400	2,500
Proceeds from issuance of debt	30,130	4,005
Payments of principal on debt	(10,815)	(248)
Proceeds from sale-leaseback	913
Proceeds from issuance of debt - related party	400
Payments of principal on debt - related party	(512)	(1,163)
Payments on fuel advance	(88)	(19)
Advances from factoring arrangements	163,496	4,100
Payments on factoring arrangements	(153,836)
Debt issuance costs	(678)	(525)
Payments on finance lease liability	(908)
Payments on related party advances	(324)
Payments to related parties		(46)
Net cash provided by financing activities	39,178	8,499
Net increase in cash	1,644	1,546
Cash - beginning of year	1,630	84
Cash - end of year	3,274	1,630
Supplemental disclosures of cash flow information:
Income tax paid	8
Interest paid	4,610	716
Supplemental schedule of non-cash investing and financing activities:
Fair value of common stock and redeemable common stock issued for acquisitions	8,553	415
Debt issued to sellers for acquisitions	6,430	2,800
Fixed assets acquired with debt issuance	234
Common stock for settlement of accounts payable - related party	119	150
Common stock for settlement of accounts payable	10	36
Common stock for settlement of note payable	48
Conversion of related party notes payable to common stock		156
Fair value of warrants and common stock issued in connection with Antara financing arrangement	8,061
Assignment of related party receivable to repay related party debt	402
Common stock and warrants issuable for purchase of equipment	$ 3,474
Debt discount related to secured convertible promissory notes		3,294
Redeemable Series A Preferred Stock [Member]
Adjustments to reconcile net loss to net cash used in operating activities
Stock issued for services		234
Bridge Notes [Member]
Supplemental schedule of non-cash investing and financing activities:
Issuance of common stock for exchange of bridge notes and interest – related party		1,425
Issuance of common stock for exchange of bridge notes and interest		$ 453