CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
REVENUE:
Total revenue	$ 59,533,000	$ 70,388,000
OPERATING COSTS AND EXPENSES:
Depreciation	13,471,000	13,602,000
Selling, general and administrative	17,294,000	26,167,000
Gain on digital assets	(2,154,000)	0
Loss (gain) on sale of assets	641,000	(9,903,000)
Impairment of long-lived assets	169,000	4,000,000
Remeasurement of environmental liability	453,000	2,409,000
Total operating costs and expenses	70,982,000	87,280,000
Operating Loss	(11,449,000)	(16,892,000)
OTHER INCOME (EXPENSE), NET:
Interest expense, net	(7,082,000)	(12,659,000)
Gain on sale of digital assets	0	512,000
Change in fair value of warrant asset	(477,000)	0
Impairment of equity securities	(869,000)	0
Other income, net	23,000	0
Total other expense, net	(8,405,000)	(12,147,000)
Loss from continuing operations before taxes	(19,854,000)	(29,039,000)
Benefit from income taxes	(69,000)	0
Net loss from continuing operations	(19,785,000)	(29,039,000)
Loss from discontinued operations, net of tax	0	(471,000)
Net loss	(19,785,000)	(29,510,000)
Comprehensive Loss
Net Loss	(19,785,000)	(29,510,000)
Foreign currency translation adjustment	(3,000)	12,000
Comprehensive loss	$ (19,788,000)	$ (29,498,000)
Net loss per share, basic and diluted:
Net loss per share from continuing operations, basic (in dollars per share)	$ (1.88)	$ (4.36)
Net loss per share from continuing operations, diluted (in dollars per share)	(1.88)	(4.36)
Loss per share from discontinued operations, basic (in dollars per share)	0	(0.07)
Loss per diluted share from discontinued operations (in dollars per share)	0	(0.07)
Net loss per share, basic (in dollars per share)	(1.88)	(4.43)
Net loss per share, diluted (in dollars per share)	$ (1.88)	$ (4.43)
Weighted Average Shares Outstanding
Weighted average shares outstanding, basic (in shares)	10,504,000	6,660,000
Weighted average shares outstanding, diluted (in shares)	10,504,000	6,660,000
Cryptocurrency mining
REVENUE:
Total revenue	$ 19,061,000	$ 24,238,000
OPERATING COSTS AND EXPENSES:
Cost of revenue	12,080,000	15,051,000
Datacenter hosting
REVENUE:
Total revenue	29,838,000	39,478,000
OPERATING COSTS AND EXPENSES:
Cost of revenue	22,237,000	29,695,000
Power and capacity
REVENUE:
Total revenue	10,634,000	6,672,000
OPERATING COSTS AND EXPENSES:
Cost of revenue	$ 6,791,000	$ 6,259,000