Commitments and Contingencies - Legal Matters (Details) - USD ($)	Jun. 05, 2025	Sep. 27, 2024	Sep. 09, 2024	Aug. 26, 2024	Aug. 18, 2024	Mar. 13, 2024	Oct. 13, 2023	Sep. 30, 2025
Cal Microturbine Arbitration
Loss Contingency, Information about Litigation Matters
Loss contingency, lawsuit filing date						Mar. 13, 2024
Loss contingency, damages sought, value		$ 25,000,000			$ 18,800,000	$ 24,500,000
Loss contingency, counterclaim, damages sought, value			$ 20,000,000
Spitzer v. Flexon, Jamison, Juric, Robinson, and Hencken
Loss Contingency, Information about Litigation Matters
Loss contingency, lawsuit filing date							Oct. 13, 2023
Loss Contingency, Classification of Accrual
Loss contingency accrual								$ 1,300,000
Mark Estrada and Ricardo Montalvo, vs. Capstone Green Energy LLC and Erick Kim
Loss Contingency, Classification of Accrual
Loss contingency accrual								0
DV Energy, LLC vs Capstone Green Energy Holdings, Inc, Capstone Turbine Corporation, Capstone Green Energy Corporation, and Capstone Green Energy, LLC
Loss Contingency, Information about Litigation Matters
Loss contingency, lawsuit filing date				Aug. 26, 2024
Loss contingency, damages sought, value				$ 700,000
Loss contingency, escrow	$ 700,000
Loss Contingency, Classification of Accrual
Loss contingency accrual								$ 0