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Investment in Melt Pharmaceuticals, Inc. and Agreements - Related Party Transactions (Details Narrative) - Melt Pharmaceuticals, Inc. [Member] - USD ($)
$ in Thousands
1 Months Ended
Feb. 28, 2019
Dec. 31, 2018
Mar. 31, 2019
Royalty payment percentage on net sales   8.00%  
Management Services Agreement [Member]      
Administrative expenses $ 10    
Reimbursable expenses due     $ 677