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Investment in Surface Pharmaceuticals, Inc. and Agreements - Related Party Transactions - Schedule of Condensed Balance Sheet (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Current assets $ 11,684 $ 8,806
Total assets 28,289 23,917
Total liabilities 23,836 21,302
Total stockholders' equity 4,453 2,615
Total liabilities and stockholders' equity 28,289 $ 23,917
Surface Pharmaceuticals Inc [Member]    
Current assets 20,090  
Non current assets 46  
Total assets 20,136  
Total liabilities 225  
Total stockholders' equity 19,911  
Total liabilities and stockholders' equity $ 20,136