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Investment in Hoth Therapeutics, Inc. (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
Mar. 31, 2019
Feb. 28, 2019
Feb. 20, 2019
Dec. 31, 2018
Common Stock [Member] | IPO [Member]        
Sale of stock, number of shares issue     1,250,000  
Sale of stock, price per share (in dollars per share)     $ 5.60  
Hoth Therapeutics, Inc [Member] | Securities Purchase Agreement [Member]        
Share price (in dollars per share)       $ 0.0001
Number of common shares issued 1,735,714 35,714    
Purchase price   $ 200    
Fair value of common stock $ 8,900      
Closing price of common stock $ 5.15