CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
OPERATING ACTIVITIES FROM CONTINUING OPERATIONS:
Net loss	$ (9,512)	$ (18,213)
Income from discontinued operations	31	382
Net loss from continuing operations	(9,543)	(18,595)
Adjustments to reconcile net loss from continuing operations to net cash flow from operating activities:
Depreciation	6,519	6,985
Accrued interest added to principal	0	1,212
Change in fair value of warrant asset	420	0
Amortization of debt issuance costs	529	1,405
Impairment of long-lived assets	169	0
Gain on sale of assets	(32)	(1,752)
Gain on digital assets	(48)	0
Stock-based compensation expense	1,381	1,049
Revenues from digital assets production	(11,774)	0
Proceeds from sale of digital assets	11,141	0
Professional fees paid in common stock	0	250
Changes in operating assets and liabilities:
Accounts receivable	173	2,519
Emissions and carbon offset credits	2,040	(337)
Digital assets	0	348
Prepaids and other assets	1,690	2,689
Income tax receivable	0	(59)
Accounts payable	(1,311)	2,101
Accrued emissions	(7,040)	38
Accrued expenses	(1,387)	(3,285)
Related party payable	380	0
Other	337	2,674
Net cash flow used for operating activities from continuing operations	(6,356)	(2,758)
INVESTING ACTIVITIES FROM CONTINUING OPERATIONS:
Purchases of and deposits for property and equipment	(4,105)	(7,033)
Proceeds from sale of assets	422	592
Proceeds from sale of digital assets	89	0
Net cash flow used for investing activities from continuing operations	(3,594)	(6,441)
FINANCING ACTIVITIES FROM CONTINUING OPERATIONS:
Proceeds from issuance of common stock, net of issuance costs	1,038	11,165
Proceeds from issuance of common stock and pre-funded warrants	6,000	0
Principal payments on debt	0	(5,304)
Net cash flow provided by financing activities from continuing operations	7,038	5,861
Discontinued Operations:
Net cash flow from operating activities of discontinued operations	(141)	159
Net cash flow from investing activities of discontinued operations	0	3,325
Increase (decrease) in cash and cash equivalents from discontinued operations	(141)	3,484
CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(3,053)	146
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - beginning of year	13,312	15,217
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - end of period	$ 10,259	$ 15,363