Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Long-Term Liabilities - Components of Accrued Expenses and Other Long-Term Liabilities (Detail)

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Accrued Expenses and Other Long-Term Liabilities - Components of Accrued Expenses and Other Long-Term Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 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 0 190
Ovamed manufacturing rights - short-term component 500 500
Lease Impairment 165 0
Other 185 192
Total accrued expenses 3,438 4,430
Other long-term liabilities:    
Hercules Note end of term charge 0 398
Ovamed manufacturing rights - long-term component 716 679
Long-term impairment charge 350 0
Total other long-term liabilities $ 1,066 $ 1,077