v3.26.1
STOCKHOLDERS' EQUITY - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 29, 2025
Feb. 12, 2025
Nov. 22, 2023
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Dec. 31, 2025
Mar. 18, 2026
Dec. 31, 2024
Loan Agreement                  
Class of Stock [Line Items]                  
Warrants expiration period       7 years   7 years      
Hyperfine Plan                  
Class of Stock [Line Items]                  
Increased number of shares available for grant             3,888,869    
Common stock shares outstanding percentage             4.00%    
Common stock remains available for issuance       7,366,459   7,366,459      
Common Stock | Registered Direct Offering                  
Class of Stock [Line Items]                  
Gross proceeds from issuance of common stock   $ 6,000,000              
Restricted Stock Unit | Registered Direct Offering                  
Class of Stock [Line Items]                  
Warrants   4,511,278              
Restricted Stock Unit | Common Stock | Registered Direct Offering                  
Class of Stock [Line Items]                  
Sale of stock price   $ 1.33              
Warrants, exercise price   $ 1.33              
Warrants expiration period   5 years              
Maximum | At-the-market Offering Program                  
Class of Stock [Line Items]                  
Proceeds from sale of securities     $ 150,000            
Class A Common Stock | At-the-market Offering Program                  
Class of Stock [Line Items]                  
Gross proceeds from issuance of common stock       $ 803,000 $ 129,000        
Class A Common Stock | Common Stock                  
Class of Stock [Line Items]                  
Shares issued       83,464,909 62,784,562 83,464,909 82,166,458   58,076,261
Class A Common Stock | Common Stock | At-the-market Offering Program                  
Class of Stock [Line Items]                  
Issuance of common stock (in shares) 3,464,325     678,012 126,398 678,012      
Gross proceeds from issuance of common stock $ 4,350,000     $ 824,000   $ 824,000      
Net proceeds after deducting commissions and other offering expenses 4,165,000     $ 803,000   $ 803,000      
Class A Common Stock | Common Stock | Registered Direct Offering                  
Class of Stock [Line Items]                  
Issuance of common stock (in shares)   4,511,278              
Class A Common Stock | Warrants | Loan Agreement                  
Class of Stock [Line Items]                  
Warrants, exercise price       $ 1.2   $ 1.2      
Warrants expiration period       7 years   7 years      
Class A Common Stock | Additional Warrants | Loan Agreement                  
Class of Stock [Line Items]                  
Warrants, exercise price               $ 1.2  
Warrants expiration period       7 years   7 years   7 years  
Warrants               520,835  
Class A Common Stock | Maximum | At-the-market Offering Program                  
Class of Stock [Line Items]                  
Proceeds from sale of securities $ 50,000   $ 50,000