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Stockholders’ Equity (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jan. 28, 2021
Feb. 27, 2020
Nov. 18, 2019
Mar. 06, 2017
Nov. 13, 2015
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2018
Jun. 30, 2016
Apr. 30, 2014
Subsidiary, Sale of Stock [Line Items]                        
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 0.50                  
Stock Issued During Period, Value, New Issues               $ 3,416,115        
Proceeds from issuance of common stock               $ 26,840,457 $ 5,653,140      
Class of warrant or right, redemption price of warrants or rights         $ 63.96     $ 0.001        
Allocated share-based compensation expense           $ 146,747 $ 465,058 $ 294,313 786,971      
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized           $ 1,100,000   $ 1,100,000        
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition               2 years 2 months 15 days        
Fair value adjustment of warrants               $ (26,257) 3,166,474      
Proceeds from exercise of warrants             $ 6,900,000 $ 5,000 $ 6,914,158      
Stock Incentive Plan2014 [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Share-based compensation arrangement by share-based payment award, number of shares authorized           5,721,906   5,721,906       1,000,000
Share-based compensation arrangement by share-based payment award, number of shares available for grant           1,584,874   1,584,874        
Contractual life               10 years        
Stock Incentive Plan2014 [Member] | Minimum [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Share-based compensation arrangement by share-based payment award, number of shares authorized             3,221,906   3,221,906 2,471,906 1,271,906  
Stock Incentive Plan2014 [Member] | Maximum [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Share-based compensation arrangement by share-based payment award, number of shares authorized             5,721,906   5,721,906 3,221,906 2,471,906  
Equity Incentive Plan [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Share-based compensation arrangement by share-based payment award, number of shares available for grant                       271,906
Share-based Payment Arrangement, Option [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Share-based compensation arrangement by share-based payment award, options, grants in period, gross           66,000 113,000 376,000 739,000      
Share-based compensation arrangement by share-based payment award, options, exercises in period           0 0 4,584 0      
Common Stock [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock issued during period, shares, new issues               1,811,238        
Stock Issued During Period, Value, New Issues               $ 181        
Share-based compensation arrangement by share-based payment award, options, exercises in period               4,584        
Warrant [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Issued                      
Common warrants to purchase share of our common stock           0   10,000        
Proceeds from exercise of warrants             $ 0   $ 5,000      
Common Stock Warrant [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Proceeds from exercise of warrants             13,497,807   13,618,807      
Sales Agreement [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Percentage of gross proceeds on sale of shares       300.00%                
January2021 Offering [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Proceeds from issuance of common stock, gross $ 28,700,000                      
Agent fees and other offering expenses $ 1,900,000                      
Stock issued during period, shares, new issues 16,428,571                      
February2020 Offering [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Proceeds from issuance of common stock, gross   $ 6,000,000.0                    
Agent fees and other offering expenses   $ 347,000                    
Issued               5,042,017        
February2020 Offering [Member] | Class A Unit [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock issued during period, shares, new issues   10,084,034                    
Shares issued, price per share   $ 0.595                    
February2020 Offering [Member] | Common Stock [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Shares issued, price per share   $ 0.53                    
November 2019 Offering [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Proceeds from issuance of common stock, gross     $ 6,000,000.0                  
Agent fees and other offering expenses     $ 404,000                  
Warrants outstanding           1,094,030   1,094,030        
Fair value adjustment of warrants           $ 221,000 $ 2,100,000 $ 26,000 $ 3,200,000      
November 2019 Offering [Member] | Class A Unit [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock issued during period, shares, new issues     10,450,000                  
Shares issued, price per share     $ 0.50                  
November 2019 Offering [Member] | Common Stock [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock Issued During Period, Value, New Issues     $ 768,000                  
November 2019 Offering [Member] | Class B Units [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock issued during period, shares, new issues     1,550,000                  
Shares issued, price per share     $ 0.4999                  
November 2019 Offering [Member] | Pre Funded Warrants [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Shares issued, price per share     $ 0.0001                  
November 2019 Offering [Member] | Additional Paid-in Capital [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock Issued During Period, Value, New Issues     $ 4,800,000                  
At Market Offering [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Proceeds from issuance of common stock, gross               $ 32,900,000        
Stock issued during period, shares, new issues               15,023,073        
Shares issued, price per share           $ 2.19   $ 2.19        
At Market Offering [Member] | Common Stock [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Stock issued during period, shares, new issues               1,811,238        
Accredited Investors [Member]                        
Subsidiary, Sale of Stock [Line Items]                        
Proceeds from issuance of common stock, gross               $ 41,200,000        
Shares issued, price per share           $ 1.95   $ 1.95        
Proceeds from issuance of common stock               $ 112,000