v3.26.1
SEGMENTS (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Segment Reporting [Abstract]    
Number of operating segments | segment 1  
Number of reportable segments | segment 1  
Segment Reporting Information [Line Items]    
Revenue $ 212 $ 212
Research and development: 2,871 5,725
Net loss (8,278) (9,439)
Reporting Segment    
Segment Reporting Information [Line Items]    
Revenue 212 212
General and administrative, excluding personnel expenses 4,223 1,525
General and administrative, personnel expenses (including share-based compensation) 1,851 2,632
Other segment items (455) (231)
Net loss (8,278) (9,439)
Reporting Segment | RLYB212    
Segment Reporting Information [Line Items]    
Research and development: 56 2,438
Reporting Segment | RLYB116    
Segment Reporting Information [Line Items]    
Research and development: 396 619
Reporting Segment | Other program candidates    
Segment Reporting Information [Line Items]    
Research and development: 2 (163)
Reporting Segment | Personnel expenses (including share-based compensation)    
Segment Reporting Information [Line Items]    
Research and development: 2,280 2,589
Reporting Segment | Other expenses    
Segment Reporting Information [Line Items]    
Research and development: $ 137 $ 242