CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents, including restricted cash		$ 13,312	$ 15,217
Digital assets		347	348
Accounts receivable		358	2,696
Prepaid expenses and current other assets		3,864	6,266
Emissions and carbon offset credits		5,694	1,260
Income tax receivable		857	798
Current assets held for sale		0	6,473
Total current assets		24,432	33,058
LONG-TERM ASSETS:
Property and equipment, net		45,095	130,417
Other long-term assets		1,652	292
Total assets		71,179	163,767
CURRENT LIABILITIES:
Accounts payable		3,495	9,608
Accrued emissions expense		10,520	6,052
Accrued expenses		6,116	11,327
Short-term environmental liability		363	600
Long-term debt, current portion		0	67,161
Current liabilities held for sale		483	3,974
Total current liabilities		20,977	98,722
LONG-TERM LIABILITIES:
Long-term debt, net of current portion and deferred financing fees		68,710	84,585
Environmental liabilities		29,866	27,400
Other long-term liabilities		2,650	107
Total liabilities		122,203	210,814
COMMITMENTS AND CONTINGENCIES (NOTE 10)
STOCKHOLDERS' DEFICIT:
Preferred stock, par value $0.0001, 20,000,000 shares authorized, none outstanding		0	0
Common stock, par value $0.0001, 500,000,000 shares authorized, 9,131,252 and 4,625,278 1 shares issued and outstanding as of December 31, 2023 and 2022, respectively	[1]	1	0
Cumulative translation adjustment		(345)	(357)
Additional paid-in capital	[1]	319,992	293,774
Common stock subscription receivable		(698)	0
Accumulated deficit		(369,974)	(340,464)
Total stockholders' deficit		(51,024)	(47,047)
Total liabilities and stockholders' deficit		$ 71,179	$ 163,767

[1] Retroactively adjusted for the effects of the Reverse Stock Split (see Note 1 — Organization and Description of Business)