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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Roll-forward of Digital Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Crypto Asset [Roll Forward]            
Digital assets, beginning of period     $ 23,893 $ 2,284    
Digital asset self-mining revenue, net of receivables     187,396 329,799    
Mining revenue from shared hosting     0 15,693    
Proceeds from sales of digital assets and shared hosting     0 (347,397)    
Increase (decrease) in fair value of digital assets $ 10,957 $ (206) 30,066 (247)    
Payment of board fee     0 (89)    
Other     0 (67)    
Digital assets, end of period 241,355 0 241,355 0    
Digital asset receivable, current $ 500 $ 700 500 700 $ 900 $ 1,700
Cumulative Effect, Period of Adoption, Adjustment            
Crypto Asset [Roll Forward]            
Digital assets, beginning of period     0 24    
Cumulative Effect, Period of Adoption, Adjusted Balance            
Crypto Asset [Roll Forward]            
Digital assets, beginning of period     $ 23,893 $ 2,308