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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
 3 Months Ended
Mar. 31, 2024
USD ($)
miningPoolOperator
bitcoinMiner
operatingSegment
$ / shares
shares
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 31, 2022
$ / shares
Significant Accounting Policies [Line Items]          
Cumulative-effect adjustment due to the adoption of Accounting Standard Update 2023-08 $ 37,000 $ 0      
Cash exceeding FDIC limit $ 0        
Number of operating segments | operatingSegment 1        
Deposits on miners $ 16,300,000   $ 36,500,000    
Percentage of changes in debt value and net presents value of future cash flows 10.00%        
Quoted price of bitcoin $ 38,000        
Miner hosting revenue 800,000 2,300,000      
Impairment of intangible assets   600,000      
Power curtailment credits $ 1,200,000 100,000      
Number of common stock issued upon conversion of preferred stock (in shares) | shares 1,200,000        
Warrants outstanding (in shares) | shares 49,120,642        
Exercise price of warrants (in dollars per share) | $ / shares $ 0.58       $ 1.93
Equity $ 272,343,000 146,313,000 222,489,000 $ 117,754,000  
Gain on fair value of digital currency, net $ 1,329,000 0      
Number suppliers for bitcoin miners | bitcoinMiner 2        
Number of mining pool operators | miningPoolOperator 1        
Accumulated Deficit          
Significant Accounting Policies [Line Items]          
Equity $ (269,471,000) $ (212,731,000) (259,895,000) $ (186,474,000)  
Cumulative Effect, Period of Adoption, Adjustment          
Significant Accounting Policies [Line Items]          
Equity     37,000    
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit          
Significant Accounting Policies [Line Items]          
Equity     $ 37,000    
Data center hosting customer | Revenue Benchmark | Customer Concentration Risk          
Significant Accounting Policies [Line Items]          
Concentration risk percentage 1.80% 17.20%      
Restricted Stock Units (RSUs)          
Significant Accounting Policies [Line Items]          
Number of shares outstanding (in shares) | shares 11,590,695        
Computer Equipment          
Significant Accounting Policies [Line Items]          
Property, plant and equipment, useful life 5 years        
Digital Currency Mining Equipment          
Significant Accounting Policies [Line Items]          
Property, plant and equipment, useful life 4 years