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Business Segment And Geographic Information (Tables) | 12 Months Ended
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Mar. 31, 2013
Business Segment And Geographic Information [Abstract] |
Operating Results For Two Business Segments |
|  | For the Years Ended March 31,
|  | 2013 |  | 2012 |  | 2011
Revenues: |  |  |  |  |  |
Wind | $ | 44,231 | $ | 44,642 | $ | 231,761
Grid |  | 43,188 |  | 31,901 |  | 54,842
Total | $ | 87,419 | $ | 76,543 | $ | 286,603
| For the Years Ended March 31,
|  | 2013 |  | 2012 |  | 2011
Operating loss: |  |  |  |  |  |
Wind | $ | (16,098) | $ | (62,217) | $ | (100,546)
Grid |  | (23,815) |  | (29,645) |  | (63,855)
Unallocated corporate expenses |  | (17,828) |  | (44,577) |  | (13,582)
Total | $ | (57,741) | $ | (136,439) | $ | (177,983)
Total Business Segments Assets |
|  | March 31, |  |  | March 31,
|  | 2013 |  |  | 2012
Wind | $ | 67,111 |  | $ | 70,054
Grid |  | 72,800 |  |  | 89,091
Corporate assets |  | 76,843 |  |  | 95,911
Total | $ | 216,754 |  | $ | 255,056
Geographic Information About Revenue, Based On Shipments To Customers By Region |
|  | For the Years Ended March 31,
|  | 2013 |  | 2012 |  | 2011
U.S. | $ | 13,197 | $ | 21,347 | $ | 18,642
Canada |  | 1,663 |  | 1,219 |  | 6,670
Europe |  | 14,709 |  | 2,868 |  | 10,289
China |  | 17,906 |  | 16,929 |  | 219,194
Korea |  | 10,945 |  | 12,486 |  | 10,281
India |  | 17,062 |  | 14,212 |  | 3,835
Australia |  | 11,937 |  | 7,482 |  | 17,692
Total | $ | 87,419 | $ | 76,543 | $ | 286,603

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