v3.26.1
Net Loss Per Common Share - Schedule of Basic and Diluted Net Loss Per Common Share Attributable to Common Shareholders (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
NUMERATOR            
Net loss $ (6,356) $ (6,898) $ (6,462) $ (4,822) $ (13,254) $ (11,284)
Less: Net loss attributable to noncontrolling interest 0   (14)   0 (23)
Net loss attributable to Serina common stockholders, basic (8,932)   (6,565)   (15,867) (11,378)
Net loss attributable to Serina common stockholders, diluted $ (8,932)   $ (6,565)   $ (15,867) $ (11,378)
DENOMINATOR            
Weighted-average shares of common stock outstanding used to calculate basic net (loss) earnings per common share ( in shares) 16,385   10,004   14,232 9,883
Net loss per common share attributable to common stockholders, basic (in usd per share) $ (0.55)   $ (0.66)   $ (1.11) $ (1.15)
Net loss per common share attributable to common stockholders, diluted (in usd per share) $ (0.55)   $ (0.66)   $ (1.11) $ (1.15)
Series A Convertible Preferred Stock            
NUMERATOR            
Preferred stock dividends, impact $ (2,539)   $ 0   $ (2,539) $ 0
Series A Preferred Stock, Undeclared            
NUMERATOR            
Preferred stock dividends, impact $ (37)   $ (117)   $ (74) $ (117)