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Certain Balance Sheet Items - Property and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Subtotal $ 28,302 $ 33,841
Right of use asset $ 393 $ 418
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property and equipment, net Property and equipment, net
Property and equipment, net $ 28,695 $ 34,259
Mining Equipment    
Property, Plant and Equipment [Line Items]    
Mining equipment 31,600 35,550
Accumulated depreciation $ 3,298 $ 1,709