Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges



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|------------------------------------------------------------ |  | ------------------------ | ------ | --- | ---- | - | ------ |  | ---- | ------ |  | ---- | -------- | --- |  | - | ------
|                                                             |  | Years Ended December 31,
|                                                             |  | 2005                     |        |     | 2006 |   | 2007   |  | 2008 |        |  | 2009
|Income (loss) from continuing operations before income taxes |  | $                        | (4,469 | )   |      | $ | 41,531 |  | $    | 22,209 |  | $    | (133,076 | )   |  | $ | 16,035
|Fixed charges:                                               |  |                          |        |     |      |   |        |  |      |        |  |      |          |     |  |   |       
|Interest expense                                             |  |                          | 5,010  |     |      |   | 5,028  |  |      | 5,012  |  |      | 1,537    |     |  |   | 4     
|Interest relating to rental expense(1)                       |  |                          | 4,079  |     |      |   | 5,790  |  |      | 6,339  |  |      | 5,314    |     |  |   | 2,438 
|                                                             |  |                          |        |     |      |   |        |  |      |        |  |      |          |     |  |   |       
|Total fixed charges                                          |  |                          | 9,089  |     |      |   | 10,818 |  |      | 11,351 |  |      | 6,851    |     |  |   | 2,442 
|                                                             |  |                          |        |     |      |   |        |  |      |        |  |      |          |     |  |   |       
|Earnings available for fixed charges                         |  | $                        | 4,620  |     |      | $ | 52,349 |  | $    | 33,560 |  | $    | (126,225 | )   |  | $ | 18,477
|                                                             |  |                          |        |     |      |   |        |  |      |        |  |      |          |     |  |   |       
|Ratio of earnings to fixed charges                           |  |                          | N/A    | (2) |      |   | 4.84   |  |      | 2.96   |  |      | N/A      | (3) |  |   | 7.57  
|                                                             |  |                          |        |     |      |   |        |  |      |        |  |      |          |     |  |   |       



|(1) | The representative interest portion of rental expense was deemed to be one-third of all rental expense, except for the rental expense related to the
off-balance sheet financing leases, as described in the footnotes to the financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2008 which was deemed to be all interest.
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|(2) | For the year ended December 31, 2005 our earnings were insufficient to cover fixed charges; the amount of additional earnings needed to cover
fixed charges for the year was $4.5 million.
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|(3) | For the year ended December 31, 2008 our earnings were insufficient to cover fixed charges; the amount of additional earnings needed to cover
fixed charges for the year was $133.1 million.
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