XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.25.4

Note 14 - Contingent Consideration (Tables) | 9 Months Ended
--- | ---
Dec. 31, 2025
Northeast Power Systems, Inc (NEPSI) [Member] |
Notes Tables |
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
|  | June 30, |  |  | March 31, |
Fiscal Year 2024 |  | 2024 |  |  | 2024 |
Revenue risk premium |  |  | 5.50 | % |  |  | 5.50 | %
Revenue volatility |  |  | 27.5 | % |  |  | 24.8 | %
Stock Price |  | $ | 23.39 |  |  | $ | 13.51 |
Payment delay (days) |  |  | 80 |  |  |  | 80 |
Fair value (millions) |  | $ | 7.0 |  |  | $ | 3.1 |
|  | December 05, |
Fiscal Year 2025 |  | 2025 |
EBITDA Risk Premium (continuous) |  |  | 2.10 | %
EBITDA Volatility |  |  | 25.0 | %
Credit Spread (semiannual) |  |  | 1.9 | %
Payment delay (days) |  |  | 89 |
Fair value (millions) |  | $ | 35.9 |

X
- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=amsc_NortheastPowerSystemsIncNEPSIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |