CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
OPERATING ACTIVITIES FROM OPERATIONS:
Net loss	$ (5,564)	$ (3,944)
Adjustments to reconcile net loss from operations to net cash flow from operating activities:
Depreciation	3,131	3,234
Change in fair value of warrant asset	0	420
Amortization of debt issuance costs	(83)	261
Impairment of long-lived assets	0	169
Loss on sale of assets	137	0
Stock-based compensation expense	543	1,070
Revenues from digital assets production	(4,226)	(6,999)
Proceeds from sale of digital assets	0	7,104
Loss (gain) on digital assets	(988)	59
Gain on insurance proceeds	(399)	0
Loss on liquidation of subsidiary	348	0
Changes in operating assets and liabilities:
Accounts receivable	1,070	(216)
Emissions and carbon offset credits	2,376	(6,258)
Prepaids and other assets	556	626
Accounts payable	(262)	(317)
Accrued emissions	(1,502)	1,736
Accrued expenses	(707)	(1,850)
Contract liabilities	(2,339)	0
Other long-term liabilities	1,505	0
Other	(1,298)	(38)
Net cash flow used for operating activities	(5,726)	(5,061)
INVESTING ACTIVITIES FROM OPERATIONS:
Purchases of and deposits for property and equipment	(902)	(1,332)
Proceeds from sale of assets	706	380
Proceeds from insurance claim	399	0
Proceeds from sale of digital assets	1,783	0
Net cash flow provided by (used for) investing activities	1,986	(952)
FINANCING ACTIVITIES FROM OPERATIONS:
Proceeds from issuance of common stock, net of issuance costs	0	1,038
Proceeds from issuance of common stock and pre-funded warrants	0	6,000
Net cash flow provided by financing activities	0	7,038
CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(3,740)	1,025
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - beginning of year	8,619	13,312
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - end of period	$ 4,879	$ 14,337