Exhibit 12.1
Statement re Computation of Ratio of Earnings to Fixed Charges
Year Ended December 31, | Six Months Ended June 30, 2012 | |||||||||||||||||||||||
2007 | 2008 | 2009 | 2010 | 2011 | ||||||||||||||||||||
(in thousands) | ||||||||||||||||||||||||
Earnings: | ||||||||||||||||||||||||
Net loss | $ | (28,575 | ) | $ | (37,874 | ) | $ | (31,929 | ) | $ | (17,347 | ) | $ | (25,997 | ) | $ | (10,587 | ) | ||||||
Add: Fixed charges | 1,671 | 2,713 | 4,154 | 1,288 | 753 | 388 | ||||||||||||||||||
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Total earnings (loss) | $ | (26,904 | ) | $ | (35,161 | ) | $ | (27,775 | ) | $ | (16,059 | ) | $ | (25,244 | ) | $ | (10,199 | ) | ||||||
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Fixed Charges: | ||||||||||||||||||||||||
Interest expense | $ | 911 | $ | 2,030 | $ | 2,613 | $ | 870 | $ | 488 | $ | 273 | ||||||||||||
Amortization of commitment fees, debt issuance costs and original issue discount | 738 | 654 | 1,491 | 388 | 235 | 100 | ||||||||||||||||||
Estimated interest component of rent expense | 22 | 29 | 50 | 30 | 30 | 15 | ||||||||||||||||||
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Total fixed charges | $ | 1,671 | $ | 2,713 | $ | 4,154 | $ | 1,288 | $ | 753 | $ | 388 | ||||||||||||
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Ratio of earnings to fixed charges | — | — | — | — | — | — | ||||||||||||||||||
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Deficiency of earnings available to cover fixed charges | $ | (28,575 | ) | $ | (37,874 | ) | $ | (31,929 | ) | $ | (17,347 | ) | $ | (25,997 | ) | $ | (10,587 | ) |