|                                             |   | Year Ended March 31,          |    |
|--------------------------------------------------|--------|-------------------------------|---------|
|                                             |   | 2010                          |    |   | 2009 |   |   | 2008 |   |   | 2007 |   |   | 2006 |   |
|                                             |   | (In thousands, except ratios) |    |
| Fixed charges:                                   |   |                          |    |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest expense                                 |   | $                             | 8,603   |   |   | $ | 4,857 |   |   | $ | 6,354 |   |   | $ | 1,896 |   |   | $ | 1,784 |   |
| Capitalized interest                             |   |                          | 346     |   |   |   | 1,424 |   |   |   | 848 |   |   |   | 726 |   |   |   | 481 |   |
| Estimation of the interest within rental expense |   |                          | 500     |   |   |   | 468 |   |   |   | 163 |   |   |   | 105 |   |   |   | 70 |   |
| Total fixed charges                              |   | $                             | 9,449   |   |   | $ | 6,749 |   |   | $ | 7,365 |   |   | $ | 2,727 |   |   | $ | 2,335 |   |
| Earnings:                                        |   |                          |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Add:                                             |   |                          |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Income (loss) before income tax                  |   | $                             | (31,776 | ) |   | $ | (130,975 | ) |   | $ | 53,527 |   |   | $ | 21,470 |   |   | $ | 12,482 |   |
| Fixed charges (calculated above)                 |   |                          | 9,449   |   |   |   | 6,749 |   |   |   | 7,365 |   |   |   | 2,727 |   |   |   | 2,335 |   |
| Amortization of capitalized interest             |   |                          | 213     |   |   |   | 179 |   |   |   | 144 |   |   |   | 18 |   |   |   | — |   |
| Deduct:                                          |   |                          |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Noncontrolling interest                          |   |                          | 257     |   |   |   | 40 |   |   |   | (11 | ) |   |   | — |   |   |   | — |   |
| Capitalized interest                             |   |                          | (346    | ) |   |   | (1,424 | ) |   |   | (848 | ) |   |   | (726 | ) |   |   | (481 | ) |
| Total earnings                                   |   | $                             | (22,203 | ) |   | $ | (125,431 | ) |   | $ | 60,177 |   |   | $ | 23,489 |   |   | $ | 14,336 |   |
| Ratio of Earnings to Fixed Charges(1)            |   |                          | — |   |   |   | — |   |   |   | 8.2 | x |   |   | 8.6 | x |   |   | 6.1 | x |

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| (1) | For purposes of this calculation, “Earnings” is Income (loss) before income taxes plus Fixed Charges and Amortization of capitalized interest less Noncontrolling interest and Capitalized interest. “Fixed Charges” is Interest expense plus Capitalized interest and Estimation of the interest within rental expense.  Earnings were insufficient to cover fixed charges by $31.7 million and $132.2 million, for the fiscal year ended March 31, 2010 and 2009, respectively. |
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