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Investment in Hoth Therapeutics, Inc. (Tables)
 6 Months Ended
Jun. 30, 2021
Investment In Hoth Therapeutics Inc Abstract [Abstract]  
Schedule of investment in Hoth
Security Name  Shares Owned
as of
June 30,
2021		   Fair value per Share
as of
June 30,
2021		   Fair value
as of
June 30,
2021
(in thousands)		 
HOTH   1,166,415   $1.60   $1,866