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Sale of VIBATIV (Details) - USD ($)
$ in Thousands
12 Months Ended
Nov. 12, 2018
Nov. 01, 2018
Dec. 31, 2018
Apr. 30, 2019
Sale of VIBATIV        
Net gain upon sale of VIBATIV     $ 6,056  
VIBATIV | Disposed of by Sale        
Sale of VIBATIV        
Proceeds from the sale of assets $ 20,000      
Additional cash payment to the Company       $ 5,000
Tiered royalties (as a percent)   20.00%    
Cumulative amount of royalties to be received   $ 100,000    
VIBATIV | Disposed of by Sale | Interest and other income (expense), net        
Sale of VIBATIV        
Net gain upon sale of VIBATIV     $ 6,100  
Transition-related costs $ 1,100