Accrued expenses and other long-term liabilities consisted of the following: | | As of March 31, 2014 | | As of December 31, 2013 | | Accrued expenses: | | | | | | | | Salaries, bonuses and related benefits | | $ | 272 | | $ | 450 | | Severance | | | 993 | | | 1,502 | | Professional fees | | | 280 | | | 351 | | Research and development expenses | | | 1,043 | | | 1,245 | | State franchise taxes | | | | | | 190 | | Ovamed manufacturing rights short-term component | | | 500 | | | 500 | | Lease impairment | | | 165 | | | | | Other | | | 185 | | | 192 | | Total accrued expenses | | $ | 3,438 | | $ | 4,430 | | Other long-term liabilities: | | | | | | | | Hercules Note end of term charge | | | | | | 398 | | Ovamed manufacturing rights long-term component | | | 716 | | | 679 | | Long-term impairment charge | | | 350 | | | | | Total other long-term liabilities | | $ | 1,066 | | $ | 1,077 | |
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