Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOW FROM OPERATING ACTIVITIES:
Net (loss) income	$ (429)	$ 1,279
Adjustments to reconcile net (loss) income to net cash flow from operating activities:
Depreciation and amortization	3,978	1,261
Deferred income taxes	(1,788)	482
Amortization of debt issuance costs	424	0
Accretion of asset retirement obligations	0	33
Stock-based compensation expense	362	656
Changes in operating assets and liabilities:
Accounts receivable	(45)	283
Emissions credits/carbon offsets	1,336	1,336
Prepaids and other assets	(1,608)	(704)
Accounts payable	1,398	(770)
Accrued emissions	3	(1,670)
Accrued expenses	1,301	51
Income taxes payable	1,398	250
Net cash flow provided by operating activities	6,330	2,487
CASH FLOW FROM INVESTING ACTIVITIES:
Purchases of and deposits for property and equipment	(71,135)	(5,667)
Proceeds from sale of marketable securities	496	0
Net cash flow used in investing activities	(70,639)	(5,667)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from issuance of  preferred stock, net of issuance costs		37,112
Proceeds from issuance of common stock, net of issuance costs	3,791
Proceeds from stock options exercised	2	1,000
Restricted stock unit awards settled in cash for taxes	(65)
Proceeds from debt, net of issuance costs	80,371
Principal payments on debt	(5,702)	(818)
Repayments of finance lease obligations	(234)
Net cash flow provided by financing activities	78,163	37,294
CHANGE IN CASH AND CASH EQUIVALENTS	13,854	34,114
CASH AND CASH EQUIVALENTS—beginning of year	82,599	5,052
CASH AND CASH EQUIVALENTS—end of year	$ 96,453	$ 39,166