v3.26.1
Net Loss Per Share Attributable to Common Stockholders - Computation for basic and diluted loss per share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Net loss (Numerator):                
Net loss - basic and diluted $ (14,892) $ (9,796) $ (26,808) $ (10,976) $ (24,688) $ (37,784) $ (55,844) $ (55,654)
Shares (Denominator):                
Weighted-average shares outstanding - basic (in shares) 5,309,724   2,374,729   5,274,630 2,354,425 2,842,448 2,330,386
Weighted-average shares outstanding - diluted (in shares) 5,309,724   2,374,729   5,274,630 2,354,425 2,842,448 2,330,386
Loss per share - basic (in dollars per share) $ (2.8)   $ (11.29)   $ (4.68) $ (16.05) $ (19.65) $ (23.88)
Loss per share - diluted (in dollars per share) $ (2.8)   $ (11.29)   $ (4.68) $ (16.05) $ (19.65) $ (23.88)
Pre-Funded Warrants                
Net Loss Per Share Attributable to Common Stockholders                
Remaining outstanding balance of pre-funded warrants 1,240,823       1,240,823   1,697,678