Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOW FROM OPERATING ACTIVITIES:
Net income (loss)	$ (3,099)	$ (2,466)
Adjustments to reconcile net income (loss) to net cash flow from operating activities:
Depreciation and amortization	5,531	3,227
Deferred income taxes	(2,945)	0
Amortization of debt issuance costs	54	0
Accretion of asset retirement obligations	103	108
Stock-based compensation expense	1,474	0
Investor fee paid in common stock	17,826	0
Advisor fee paid in warrants	8,779	0
Loss on environmental trust liability	67	0
Changes in operating assets and liabilities:
Accounts receivable	272	(165)
Emissions credits/carbon offsets	107	(336)
Prepaids and other assets	(5,955)	(965)
Accounts payable	(455)	(1,062)
Accrued emissions	(408)	941
Accrued expenses	5,315	1,506
Net cash flow provided by operating activities	26,666	788
CASH FLOW FROM INVESTING ACTIVITIES:
Purchases of and deposits for property and equipment	(65,757)	(9,738)
Cash received in Merger	27,113	0
Project deposit	0	436
Net cash flow used in investing activities	(38,644)	(9,302)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from issuance of  preferred stock, net of issuance costs	37,113
Proceeds from stock options exercised	1,000	0
Proceeds from warrants exercised	2,155	0
Issuance costs associated with shares issued for Support acquisition	(2,296)	0
Proceeds from on notes payable, net of issuance costs	25,112	0
Principal payments on notes payable	(4,440)	0
Repayments of capital lease obligations	(569)	0
Net cash flow provided by financing activities	58,075	0
CHANGE IN CASH AND CASH EQUIVALENTS	46,097	(8,514)
CASH AND CASH EQUIVALENTS—beginning of year	5,052	11,750
CASH AND CASH EQUIVALENTS—end of year	$ 51,149	$ 3,236