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Organization and Summary of Significant Accounting Policies (Details 3) - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Common shares equivalents, outstanding 18,817,702 21,134
Convertible preferred stock [Member]    
Common shares equivalents, outstanding 16,616,250
Warrants [Member]    
Common shares equivalents, outstanding 470,939 15,174
Options [Member]    
Common shares equivalents, outstanding 873,420 5,960
Stock awards [Member]    
Common shares equivalents, outstanding 857,093