v3.26.3
SEGMENTS (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
segment
Sep. 30, 2025
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | segment     1  
Number of reportable segments | segment     1  
Segment Reporting [Line Items]        
Revenue $ 0 $ 212 $ 212 $ 636
Research and development: 584 4,143 4,213 15,942
Net (loss) income (2,725) 16,016 32,662 (3,126)
Reporting Segment        
Segment Reporting [Line Items]        
Revenue 0 212 212 636
General and administrative, excluding personnel expenses 1,765 1,440 9,714 4,437
General and administrative, personnel expenses (including share-based compensation) 1,074 1,554 4,094 6,909
Other segment items (698) (22,941) (50,471) (23,526)
Net (loss) income (2,725) 16,016 32,662 (3,126)
Reporting Segment | Candid Merger        
Segment Reporting [Line Items]        
Termination fee     50,000  
Reporting Segment | RLYB212        
Segment Reporting [Line Items]        
Research and development: 123 1,213 131 5,028
Reporting Segment | RLYB116        
Segment Reporting [Line Items]        
Research and development: 215 1,014 1,136 2,907
Reporting Segment | Other program candidates        
Segment Reporting [Line Items]        
Research and development: 0 39 7 (29)
Reporting Segment | Personnel expenses (including share-based compensation)        
Segment Reporting [Line Items]        
Research and development: 212 1,707 2,672 7,457
Reporting Segment | Other expenses        
Segment Reporting [Line Items]        
Research and development: $ 34 $ 170 $ 267 $ 579