v3.26.3
Stockholders' equity - Additional Information (Detail) - USD ($)
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Sep. 29, 2026
Apr. 27, 2026
Feb. 28, 2026
Dec. 31, 2025
Increase The Number of Share Issuable            
Warrants and rights outstanding $ 1,347,235         $ 29,161
Adjusted down round deemed dividends preferred stock 5,118,000          
Payments of ordinary dividends preferred stock and preference stock 383,333 $ 379,167        
Proceeds from exercise of warrants 3,564,962 660,806        
Adjustment to fair value of warrant liabilities $ 2,030,240 $ (508,232)        
Fair Value Measurements Of Warrant Expected Volatility Rate 56.21%          
Fair Value Measurements Of Warrant Risk Free Interest Rate 4.23%          
Class B2 Warrant [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 4,290          
Proceeds from exercise of warrants $ 666,975          
Fair Value Warrant Of Share Issue 86,447          
Class C2 Warrant [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 14,131          
Proceeds from exercise of warrants $ 2,897,873          
Fair Value Warrant Of Share Issue 625,719          
Class B1 B2 C1 And C2 Warrants [Member]            
Increase The Number of Share Issuable            
Class of warrant or right exercise price of warrants or rights $ 3.0032   $ 2.4444 $ 2.4444    
Common Stock [Member]            
Increase The Number of Share Issuable            
Market Value Of Common Stock $ 1.66          
Class E Warrants [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 1          
Class A warrants exercised $ 0.056          
Class E Warrants [Member] | Cash Exercise Of Warrants [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 2,040          
Proceeds from exercise of warrants $ 114          
Class E Warrants [Member] | Cashless Exercise Of Warrants [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 760          
Class D Warrants [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 4,672          
Class of warrant or right exercise price of warrants or rights $ 83.66          
Common Stock [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 15,113          
Common Stock [Member] | At The Market Offering [Member]            
Increase The Number of Share Issuable            
Common stock shares issued 15,113          
Common stock registered for sale amount         $ 98,000,000  
Proceeds from issuance of common stock $ 2,343,459          
Series A Preferred Shares [Member]            
Increase The Number of Share Issuable            
Payments of ordinary dividends preferred stock and preference stock $ 400,000          
Preferred Class A [Member]            
Increase The Number of Share Issuable            
Preferred stock, convertible, conversion price $ 3.0032