Quarterly report [Sections 13 or 15(d)]

Commitments and Contingencies - Related Party Transactions (Details)

v3.25.4
Commitments and Contingencies - Related Party Transactions (Details)
 3 Months Ended 9 Months Ended
Dec. 07, 2023
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Selling, General and Administrative Expense          
Selling, general and administrative   $ 7,409,000 $ 6,313,000 $ 21,125,000 $ 19,496,000
Affiliated Entity          
Selling, General and Administrative Expense          
Percentage of PrivateCo's income (as a percent) 90        
Other income   200,000 400,000 1,300,000 1,700,000
Affiliated Entity | Capstone Green Energy Corporation (Reorganized PrivateCo)          
Selling, General and Administrative Expense          
Related party transaction, annual royalty payment $ 100,000        
Affiliated Entity | Capstone Green Energy LLC (Operating Subsidiary)          
Selling, General and Administrative Expense          
Services fee $ 2,500,000        
Services fee cap threshold incremental percentage (as a percent) 3.50%        
Services fee cap incremental percentage (as a percent) 1.75%        
Immediate Family Member of Management or Principal Owner          
Selling, General and Administrative Expense          
Selling, general and administrative   200,000 $ 300,000 900,000 $ 900,000
Related party transaction, estimated potential bonus   $ 0   $ 0