v3.26.1
Property and Equipment, Net - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Property, Plant, and Equipment [Line Items]        
Depreciation expenses $ 0.3 $ 0.3 $ 0.6 $ 0.7
Location, Statement of Income, Balance [Axis]: pepg:ResearchAndDevelopmentAndGeneralAndAdministrativeExpense        
Property, Plant, and Equipment [Line Items]        
Non-cash charges   $ 0.7