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Entity Small Business Inox Wind Limited [Member] Represents information pertaining to Inox Wind Limited. Entity Shell Company amsc_SupplyAgreementAggregateValue Supply Agreement, Aggregate Value Represents the aggregate value of a supply agreement. Reed & Reed Inc. [Member] Represents Reed & Reed Inc. Document Information [Line Items] Public Offering [Member] Represents the public offering. 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Issuance of common stock - restricted shares Plus: change in fair value due to exercise of warrants Represents the change in fair value of warrants due to exercise. us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares) Hudson Warrant [Member] Represents Hudson Warrant. 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Micron Technology [Member] Represents information related to Micron Technology. Property, Plant and Equipment Disclosure [Text Block] Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Geographical [Axis] Property, Plant and Equipment [Table Text Block] Geographical [Domain] Inventory Net inventory Portion at Fair Value Measurement [Member] [Default] Accrued inventories in-transit Represents the amount of accrued inventories in transit, as of the balance sheet date. Equipment and Software [Member] Represents information pertaining to equipment and software. Assets And Liabilities Lessee [Table Text Block] Tabular disclosure of lessee's assets and liabilities. Deferred program costs EMEA [Member] amsc_GainLossOnDecreaseFairValueUponExerciseOfWarrant Gain (Loss) on Decrease Fair Value Upon Exercise of Warrant Represents gain loss on decrease fair value upon exercise of warrant. 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Change in accruals for warranties during the period amsc_CommonSharesPerUnit Common Shares Per Unit (in shares) Represents the number of common shares in each unit. amsc_ClassOfWarrantOrRightNumberOfWarrantsToPurchaseOneShareOfStock Class of Warrant or Right, Number of Warrants to Purchase One Share of Stock (in shares) Represents the number of warrants (to purchase one share of stock) included in each unit. 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