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v3.19.3.a.u2

Note 9 - Note Receivable (Tables) | 9 Months Ended
--- | ---
Dec. 31, 2019
Notes Tables |
Notes Receivable [Table Text Block] |
Current assets |  | December 31, 2019 |  |  | March 31, 2019 |
Note receivable, current |  | $ | — |  |  | $ | 3,000 |
Note receivable discount |  |  | — |  |  |  | (112 | )
Total current note receivable |  | $ | — |  |  | $ | 2,888 |

X
- Definition Tabular disclosure of notes receivable. + References No definition available. + Details
Name: | amsc_NotesReceivableTableTextBlock
Namespace Prefix: | amsc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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