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Note 6 - Accrued Expenses (Details) - Accrued Expenses (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Accrued Expenses [Abstract]    
Research and development costs $ 1,929 $ 6,662
Employee compensation 2,469 1,219
Selling and marketing costs 965 487
Legal service fees 284 830
RESCULA milestones   500
Other accrued expenses 564 897
Total $ 6,211 $ 10,595