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Organization and Summary of Significant Accounting Policies (Details 3) - shares
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Common shares equivalents, outstanding 24,381,679 19,436,262
Convertible preferred stock [Member]    
Common shares equivalents, outstanding 16,660,275 17,929,825
Convertible notes [Member]    
Common shares equivalents, outstanding 1,845,703
Warrants [Member]    
Common shares equivalents, outstanding 3,653,443 470,939
Options [Member]    
Common shares equivalents, outstanding 1,355,758 540,905
Stock awards [Member]    
Common shares equivalents, outstanding 866,500 494,593