Property, Plant and Equipment, Net (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 508,000	$ 508,000
Less: Accumulated depreciation	(486,000)	(485,000)
Property, plant and equipment, net	22,000	23,000
Depreciation expense	1,000	2,000
Mining equipment and machinery
Property, Plant and Equipment, Net
Property, plant and equipment, gross	158,000	158,000
Other furniture and equipment
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 350,000	$ 350,000