CONDOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
OPERATING ACTIVITIES FROM CONTINUING OPERATIONS:
Net loss	$ (271,068)	$ (44,480)
Loss from discontinued operations, net of tax	(1,327)	(66,080)
Net (loss) income from continuing operations	(269,741)	21,600
Adjustments to reconcile net loss from continuing operations to net cash flow from operating activities:
Depreciation and amortization	35,136	8,474
Deferred income taxes	15,055	5,557
Impairment of long-lived assets	176,307	0
Other non-cash affecting net income	2,097	140
Amortization of debt issuance costs	3,946	10
Stock-based compensation expense	2,636	3,770
Remeasurement of environmental liability	16,694	3,688
Gain on sale of assets	(1,780)	0
Gain on sale of digital assets	0	(275)
Changes in operating assets and liabilities:
Accounts receivable	(2,459)	153
Emissions and carbon offset credits	1,101	(439)
Prepaid expenses and other assets	1,218	(7,312)
Accounts payable	(48)	1,235
Accrued emissions expense	3,418	552
Accrued expenses	4,644	5,759
Income taxes payable and receivable	(3,142)	2,344
Other	433	0
Net cash flow (used for) provided by operating activities from continuing operations	(14,485)	45,256
INVESTING ACTIVITIES FROM CONTINUING OPERATIONS:
Purchases of and deposits for property and equipment	(132,950)	(163,571)
Proceeds from sale of assets	11,100	0
Proceeds from sale of short term investments	496	0
Net cash flow used for investing activities from continuing operations	(121,354)	(163,571)
FINANCING ACTIVITIES FROM CONTINUING OPERATIONS:
Proceeds from issuance of preferred stock, net of issuance costs	0	37,113
Proceeds from issuance of common stock, net of issuance costs	9,531	47,443
Proceeds from stock options exercised	14	1,000
Restricted stock unit awards settled in cash for taxes	(227)	(894)
Proceeds from debt, net of issuance costs	107,105	97,885
Principal payments on debt	(53,923)	(7,705)
Repayments of finance lease obligations	(363)	(777)
Net cash flow provided by financing activities from continuing operations	62,137	174,065
Discontinued Operations:
Net cash flow from operating activities of discontinued operations	6,320	(5,175)
Net cash flow from investing activities of discontinued operations	0	27,113
Net cash flow from financing activities of discontinued operations	0	(141)
Increase in cash and cash equivalents from discontinued operations	6,320	21,797
CHANGE IN CASH AND CASH EQUIVALENTS	(67,382)	77,547
CASH AND CASH EQUIVALENTS - beginning of year	82,599	5,052
CASH AND CASH EQUIVALENTS - end of year	$ 15,217	$ 82,599