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Consolidated Statements of Stockholders' Deficit (Parenthetical)
Dec. 31, 2019
Dec. 31, 2018
Percentage of conversion of convertible notes 5.75%  
5.75% Convertible Notes    
Percentage of conversion of convertible notes 5.75% 5.75%
1.50% Convertible Notes    
Percentage of conversion of convertible notes   1.50%