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Preferred Shares - H Shares (Details)
 12 Months Ended
Oct. 01, 2021
$ / shares
Dec. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
shares
Dec. 31, 2022
shares
Class of Stock [Line Items]          
Common shares, issued (in shares)       11,423,310 9,804,609
Hertford          
Class of Stock [Line Items]          
Preferred stock shares converted (in shares)       10,019  
Common shares, issued (in shares)       1,431,283  
Series H Preferred Stock          
Class of Stock [Line Items]          
Convertible preferred stock, terms of conversion The Series H Preferred Shares are convertible provided (and only if and to the extent) that prior shareholder approval of the issuance of all Sphere 3D common shares issuable upon conversion of the Series H Preferred Shares has been obtained in accordance with the rules of the Nasdaq Stock Market, at any time from time to time, at the option of the holder thereof, into 142.857 Sphere 3D common shares for every Series H Preferred Share. Each holder of the Series H Preferred Shares, may, subject to prior shareholder approval, convert all or any part of the Series H Preferred Shares provided that after such conversion the common shares issuable, together with all the common shares held by the shareholder in the aggregate would not exceed 9.99% of the total number of outstanding common shares of the Company.        
Preferred stock, redemption price (in USD per share) | $ / shares $ 1,000        
Series H Preferred Stock | Forecast          
Class of Stock [Line Items]          
Preferred Stock, Convertible, Threshold of Shares Outstanding   0.100 0.030