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Note 7 - Accounts Receivable (Tables) | 6 Months Ended
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Sep. 30, 2020
Notes Tables |
Accounts Receivable [Table Text Block] |
|  | September 30, 2020 |  |  | March 31, 2020 |
Accounts receivable (billed) |  | $ | 10,865 |  |  | $ | 11,276 |
Accounts receivable (unbilled) |  |  | 5,968 |  |  |  | 5,711 |
Less: Allowance for doubtful accounts |  |  | (23 | ) |  |  | — |
Accounts receivable, net |  | $ | 16,810 |  |  | $ | 16,987 |

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- Definition Tabular disclosure of accounts receivable. + References No definition available. + Details
Name: | amsc_AccountsReceivableTableTextBlock
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