Note 1 - Nature of the Business and Operations and Liquidity	12 Months Ended
Mar. 31, 2024
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Nature of the Business and Operations and Liquidity *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 system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™ and protect and expand the capability of the Navy's fleet. 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 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-K. 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. *Liquidity* The Company has historically experienced recurring operating losses and as of March 31, 2024, the Company had an accumulated deficit of $1,066.7 million. In addition, the Company has historically experienced recurring negative operating cash flows. At March 31, 2024, the Company had cash and cash equivalents of $90.5 million. Cash provided by operations for the year ended March 31, 2024 was $2.1 million. In January 2024, the Company filed a shelf registration statement on Form S-3 that will expire three years from the date on which it was declared effective, March 15, 2027 (the “Form S-3”). The Form S-3 allows the Company to offer and sell from time-to-time up to $250 million of common stock, debt securities, warrants or units comprised of any combination of these securities. The Form S-3 is intended to provide the Company flexibility to conduct registered sales of its securities, subject to market conditions, in order to fund its future capital needs. The terms of any future offering under the Form S-3 will be established at the time of such offering and will be described in a prospectus supplement filed with the SEC prior to the completion of any such offering. On January 31, 2024, the Company entered into an underwriting agreement with Oppenheimer & Co. Inc., as a representative of the several underwriters named therein, relating to the issuance and sale (the "2024 Offering") of 6,210,000 shares of the Company's common stock at a public offering price of $11.25 per share. The net proceeds to the Company from the 2024 Offering were approximately $65.2 million, after deducting underwriting discounts and commissions and offering expenses payable by the Company. The 2024 Offering closed on February 14, 2024. In recent periods, the Company has experienced inflationary pressure in its supply chain and some delays in sourcing materials needed for its products resulting in some production disruption, both of which have increased the Company's cost of revenues and decreased gross margin. While the impact of inflation has been challenging, the Company has taken actions to limit this pressure, including adjusting the pricing of its products and services. Changes in macroeconomic conditions arising from various reasons, such as the ongoing wars between Russia and Ukraine and Israel and Hamas, inflation, rising interest rates, labor force availability, sourcing, material delays and global supply chain disruptions could have a material adverse effect on the Company's business, financial condition and results of operation. From time-to-time the Company may undertake restructuring activities in order to align the global organization in a manner that the Company believes will better position it to achieve its long-term goals. In January 2023, the Company undertook a reduction in force that involved approximately 5% of the global workforce. This restructuring resulted in $1.0 million of cash expenses, of which $1.0 million has been paid as of March 31, 2024, and is expected to result in annualized cost savings of approximately $5.0 million, which the Company began to realize in fiscal 2023. The Company believes that based on the information presented above and its annual management assessment, it has sufficient liquidity to fund its operations and capital expenditures for the next twelve months following the issuance of the consolidated financial statements for the year ended March 31, 2024. The Company’s liquidity is highly dependent on its ability to increase revenues, its ability to control its operating costs, and its ability to raise additional capital, if necessary. The impact of global sources of instability, including the wars between Russia and Ukraine and Israel and Hamas, on the global financing markets may reduce the Company's ability to raise additional capital, if necessary, which could negatively impact the Company's liquidity. There can be no assurance that the Company will be able to continue to raise additional capital, on favorable terms or at all, from other sources or execute on any other means of improving liquidity described above.

American Superconductor Corporation (together with its subsidiaries, “AMSC®” or the “Company”) was founded on April 9, 1987. The Company is a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™ and protect and expand the capability of the Navy's fleet. 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 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-K. 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.

The Company has historically experienced recurring operating losses and as of March 31, 2024, the Company had an accumulated deficit of $1,066.7 million. In addition, the Company has historically experienced recurring negative operating cash flows. At March 31, 2024, the Company had cash and cash equivalents of $90.5 million. Cash provided by operations for the year ended March 31, 2024 was $2.1 million.

In January 2024, the Company filed a shelf registration statement on Form S-3 that will expire three years from the date on which it was declared effective, March 15, 2027 (the “Form S-3”). The Form S-3 allows the Company to offer and sell from time-to-time up to $250 million of common stock, debt securities, warrants or units comprised of any combination of these securities. The Form S-3 is intended to provide the Company flexibility to conduct registered sales of its securities, subject to market conditions, in order to fund its future capital needs. The terms of any future offering under the Form S-3 will be established at the time of such offering and will be described in a prospectus supplement filed with the SEC prior to the completion of any such offering.

On January 31, 2024, the Company entered into an underwriting agreement with Oppenheimer & Co. Inc., as a representative of the several underwriters named therein, relating to the issuance and sale (the "2024 Offering") of 6,210,000 shares of the Company's common stock at a public offering price of $11.25 per share. The net proceeds to the Company from the 2024 Offering were approximately $65.2 million, after deducting underwriting discounts and commissions and offering expenses payable by the Company. The 2024 Offering closed on February 14, 2024.

In recent periods, the Company has experienced inflationary pressure in its supply chain and some delays in sourcing materials needed for its products resulting in some production disruption, both of which have increased the Company's cost of revenues and decreased gross margin. While the impact of inflation has been challenging, the Company has taken actions to limit this pressure, including adjusting the pricing of its products and services. Changes in macroeconomic conditions arising from various reasons, such as the ongoing wars between Russia and Ukraine and Israel and Hamas, inflation, rising interest rates, labor force availability, sourcing, material delays and global supply chain disruptions could have a material adverse effect on the Company's business, financial condition and results of operation.

From time-to-time the Company may undertake restructuring activities in order to align the global organization in a manner that the Company believes will better position it to achieve its long-term goals. In January 2023, the Company undertook a reduction in force that involved approximately 5% of the global workforce. This restructuring resulted in $1.0 million of cash expenses, of which $1.0 million has been paid as of March 31, 2024, and is expected to result in annualized cost savings of approximately $5.0 million, which the Company began to realize in fiscal 2023.

The Company believes that based on the information presented above and its annual management assessment, it has sufficient liquidity to fund its operations and capital expenditures for the next twelve months following the issuance of the consolidated financial statements for the year ended March 31, 2024. The Company’s liquidity is highly dependent on its ability to increase revenues, its ability to control its operating costs, and its ability to raise additional capital, if necessary. The impact of global sources of instability, including the wars between Russia and Ukraine and Israel and Hamas, on the global financing markets may reduce the Company's ability to raise additional capital, if necessary, which could negatively impact the Company's liquidity. There can be no assurance that the Company will be able to continue to raise additional capital, on favorable terms or at all, from other sources or execute on any other means of improving liquidity described above.