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Valuation And Qualifying Accounts | 12 Months Ended
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Mar. 31, 2012
Valuation And Qualifying Accounts [Abstract] |
Valuation And Qualifying Accounts |
American Superconductor Corporation
Schedule II—Valuation and Qualifying Accounts
(In thousands)
|  | Balance, |  |  |  | Recoveries and |  |  | Balance,
|  | Beginning of |  |  |  | Other |  |  | End of
|  | Year | Additions | Write-offs |  | Adjustments |  |  | Year
Allowance for doubtful accounts receivable: |  |  |  |  |  |  |
Fiscal year ended March 31, 2012 | $ | 683 | 6 | (631 | ) | (6 | ) | $ | 52
Fiscal year ended March 31, 2011 |  | 766 | 28 | (118 | ) | 7 |  |  | 683
Fiscal year ended March 31, 2010 |  | 1,343 | 286 | (54 | ) | (809 | ) |  | 766
|  | Balance, |  |  |  |  |  |  | Balance,
|  | Beginning of |  |  |  |  |  |  | End of
|  | Year | Additions | Expirations |  | Adjustments |  |  | Year
Deferred tax asset valuation allowance: |  |  |  |  |  |  |  |  |
Fiscal year ended March 31, 2012 | $ | 220,596 | 41,709 | (10,003 | ) | – |  | $ | 252,302
Fiscal year ended March 31, 2011 |  | 187,358 | 43,308 | (10,063 | ) | (7 | ) |  | 220,596
Fiscal year ended March 31, 2010 |  | 174,695 | 16,189 | (4,148 | ) | 622 |  |  | 187,358

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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