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Note 8 - Accounts Receivable | 9 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Accounts Receivable [Text Block] | 8. Accounts Receivable Accounts receivable at December 31, 2021 and March 31, 2021 consisted of the following (in thousands):
|  | December 31, 2021 |  |  | March 31, 2021 |
Accounts receivable (billed) |  | $ | 14,312 |  |  | $ | 7,502 |
Accounts receivable (unbilled) |  |  | 6,737 |  |  |  | 5,765 |
Accounts receivable, net |  | $ | 21,049 |  |  | $ | 13,267 |

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- Definition The entire disclosure for accounts receivable. + References No definition available. + Details
Name: | amsc_AccountsReceivableTextBlock
Namespace Prefix: | amsc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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