v3.26.1
Organization and Description of Business - Business Segments (Details) - segment
3 Months Ended 6 Months Ended
Aug. 22, 2024
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Organization and Description of Business          
Number of operating segment       1  
Number of reportable segment       1  
Revenue from Contract with Customer Benchmark | Geographic concentration risk | UNITED STATES          
Organization and Description of Business          
Concentration risk percentage   100.00% 100.00% 100.00% 100.00%
Suspended status | ClearSign Asia Limited          
Organization and Description of Business          
Suspended status, period 3 years