Note 1 - Nature of the Business and Operations	3 Months Ended
Jun. 30, 2026
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Nature of the Business and Operations *Nature of the Business and Operations* American Superconductor Corporation (together with its subsidiaries, “AMSC®” or the “Company”) was founded on April 9, 1987. The Company is a leading provider of power control solutions that harmonize an increasingly complex energy system and enable customers to scale their operations without added complexity or size. The Company’s system level products leverage its proprietary “smart materials” and “smart software and controls” to provide enhanced resiliency and improved performance of megawatt-scale power flow. These unaudited condensed consolidated financial statements of the Company have been prepared on a going concern basis in accordance with United States generally accepted accounting principles (“GAAP”) and the Securities and Exchange Commission’s (“SEC”) instructions to Form 10-Q. All significant intercompany accounts and transactions are eliminated in consolidation. Investments in entities in which we do not have a controlling interest are accounted for under the equity method of accounting. The going concern basis of presentation assumes that the Company will continue operations and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business. Certain information and footnote disclosures normally included in the condensed consolidated financial statements prepared in accordance with GAAP have been omitted pursuant to those instructions. The year-end balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. The unaudited condensed consolidated financial statements, in the opinion of management, reflect all adjustments (consisting of normal recurring adjustments) necessary for a fair statement of the results for the interim periods ended June 30, 2026 and 2025 and the financial position at June 30, 2026; however, these results are not necessarily indicative of results which may be expected for the full year. The interim condensed consolidated financial statements, and notes thereto, should be read in conjunction with the audited consolidated financial statements for the year ended March 31, 2026, and notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended March 31, 2026 filed with the SEC on May 27, 2026.

Note 1 - Nature of the Business and Operations

3 Months Ended

Jun. 30, 2026

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

1. Nature of the Business and Operations

Nature of the Business and Operations

American Superconductor Corporation (together with its subsidiaries, “AMSC®” or the “Company”) was founded on April 9, 1987. The Company is a leading provider of power control solutions that harmonize an increasingly complex energy system and enable customers to scale their operations without added complexity or size. The Company’s system level products leverage its proprietary “smart materials” and “smart software and controls” to provide enhanced resiliency and improved performance of megawatt-scale power flow.

These unaudited condensed consolidated financial statements of the Company have been prepared on a going concern basis in accordance with United States generally accepted accounting principles (“GAAP”) and the Securities and Exchange Commission’s (“SEC”) instructions to Form 10-Q. All significant intercompany accounts and transactions are eliminated in consolidation. Investments in entities in which we do not have a controlling interest are accounted for under the equity method of accounting. The going concern basis of presentation assumes that the Company will continue operations and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business. Certain information and footnote disclosures normally included in the condensed consolidated financial statements prepared in accordance with GAAP have been omitted pursuant to those instructions. The year-end balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. The unaudited condensed consolidated financial statements, in the opinion of management, reflect all adjustments (consisting of normal recurring adjustments) necessary for a fair statement of the results for the interim periods ended June 30, 2026 and 2025 and the financial position at June 30, 2026; however, these results are not necessarily indicative of results which may be expected for the full year. The interim condensed consolidated financial statements, and notes thereto, should be read in conjunction with the audited consolidated financial statements for the year ended March 31, 2026, and notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended March 31, 2026 filed with the SEC on May 27, 2026.