XML 23 R40.htm IDEA: XBRL DOCUMENT v3.20.1
Fair Value Measurements - Narrative (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Marketable Securities and Fair Value Measurements (Textual) [Abstract]    
Derivative liability $ 22,041,000 $ 8,819,023
Using Quoted Prices in Active Markets for Identical Assets (Level 1)    
Marketable Securities and Fair Value Measurements (Textual) [Abstract]    
Number of shares held in an affiliated entity (in shares) 1,644,155  
Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Common stock    
Marketable Securities and Fair Value Measurements (Textual) [Abstract]    
Investment owned (in shares) 597,808  
Fair Value, Inputs, Level 3    
Marketable Securities and Fair Value Measurements (Textual) [Abstract]    
Derivative liability $ 7,100,000