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Organization and Basis of Presentation (Details) - $ / shares
Oct. 02, 2017
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]      
Common stock, par value (in dollars per share) $ 0.001 $ 0.001 $ 0.001
Opiant Pharmaceuticals, Inc.      
Business Acquisition [Line Items]      
Conversion of stock, shares issued (in shares) 1