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Subsequent Events (Details) - Subsequent Event - USD ($)
$ / shares in Units, $ in Thousands
Mar. 01, 2018
Feb. 27, 2018
Jan. 04, 2018
Feb. 28, 2018
Subsequent Event [Line Items]        
Options granted, exercise price (in dollars per share)     $ 24.84  
Recurring trademark assessment period   6 months    
Period of continual trademark assessments   5 years    
Percent of counterparty payable offset by guarantor       50.00%
Royalty commitment       $ 6,250
Proceeds from milestone payments $ 6,100      
Employee Stock Option        
Subsequent Event [Line Items]        
Expiration period     10 years  
Award vesting period     4 years  
Employee Stock Option | End of one year        
Subsequent Event [Line Items]        
Vesting percentage     25.00%  
Employee Stock Option | Monthly after year one        
Subsequent Event [Line Items]        
Vesting percentage     2.08%