Exhibit 12.1
STATEMENT OF COMPUTATION OF RATIOS
| Three Months Ended March 31, 2012 |
Year Ended December 31, | |||||||||||||||||||||||
| 2011 | 2010 | 2009 | 2008 | 2007 | ||||||||||||||||||||
| Fixed charges: |
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| Interest expense |
$ | — | $ | — | $ | — | $ | 2,000 | $ | 21,000 | $ | 96,000 | ||||||||||||
| Estimated interest portion of rent expense |
341,000 | 1,460,000 | 1,599,000 | 1,731,000 | 1,859,000 | 1,967,000 | ||||||||||||||||||
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| Total fixed charges |
$ | 341,000 | $ | 1,460,000 | $ | 1,599,000 | $ | 1,733,000 | $ | 1,880,000 | $ | 2,063,000 | ||||||||||||
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| Earnings: |
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| Net income (Loss) from continuing operations before income taxes |
$ | 244,000 | $ | (7,283,000 | ) | $ | (30,385,000 | ) | $ | (28,558,000 | ) | $ | (36,896,000 | ) | $ | (35,894,000 | ) | |||||||
| Add: Fixed charges |
341,000 | 1,460,000 | 1,599,000 | 1,733,000 | 1,880,000 | 2,063,000 | ||||||||||||||||||
| Amortization of capitalized interest |
— | — | — | — | — | — | ||||||||||||||||||
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| Total earnings |
$ | 585,000 | $ | (5,823,000 | ) | $ | (28,786,000 | ) | $ | (26,825,000 | ) | $ | (35,016,000 | ) | $ | (33,831,000 | ) | |||||||
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| Ratio of earnings to fixed charges |
1.7x | — | — | — | — | — | ||||||||||||||||||
| Ratio of earnings to combined fixed charges and preference dividends(1) |
1.7x | — | — | — | — | — | ||||||||||||||||||
| (1) | For the years ended December 31, 2011, 2010, 2008, 2007 and 2006, the earnings were insufficient to cover fixed charges by $7,283,000, $30,385,000, $28,558,000, $36,896,000 and $35,894,000, respectively. |