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Stockholders’ Equity (Details Narrative) - USD ($)
12 Months Ended
Jan. 28, 2021
Feb. 27, 2020
Nov. 18, 2019
Mar. 06, 2017
Nov. 13, 2015
Dec. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Jun. 30, 2018
Jun. 30, 2016
Apr. 30, 2014
Subsidiary, Sale of Stock [Line Items]                      
Common stock sold through ATM offering           $ 3,406,053 $ 9,004,368        
[custom:SharesAvailableForFutureIssuance-0]           $ 41,200,000          
[custom:ClassOfWarrantsOrRightRedemptionPriceOfWarrantsOrRights]         $ 63.96 $ 0.001          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value           $ 315,330          
Fair Value Adjustment of Warrants           (355,890) 2,892,189        
Net proceeds from exercise of warrants           5,000 7,674,876        
Share-based Payment Arrangement, Option [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value           $ 2,000 $ 0        
Share-based compensation arrangement by share-based payment award, options, exercises in period           4,584 0        
Stock Incentive Plan 2014 [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share-based compensation arrangement by share-based payment award, number of shares authorized           5,721,906         1,000,000
Share-based compensation arrangement by share-based payment award, number of shares available for grant           857,459          
Contractual life           10 years          
Stock Incentive Plan 2014 [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 2,471,906 1,271,906  
Stock Incentive Plan 2014 [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 3,221,906 2,471,906  
2011 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
Common Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Number of shares issued           1,811,238 6,576,300        
Common stock sold through ATM offering           $ 181 $ 658        
Share-based compensation arrangement by share-based payment award, options, exercises in period           4,584          
Common Stock Warrant [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised           10,000 15,100,000        
Net proceeds from exercise of warrants           $ 5,000 $ 7,700,000        
Sales Agreement [Member] | Cantor [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Common stock sold through ATM offering       $ 500,000.0              
Percentage of gross proceeds on sale of shares       3.00%              
January 2021 Offering [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Proceeds from issuance of common stock gross $ 28,700,000                    
Payment of stock issuance costs $ 1,900,000                    
Number of shares issued 16,428,571                    
February 2020 Offering [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Proceeds from issuance of common stock gross   $ 6,000,000.0                  
Payment of stock issuance costs   $ 347,000                  
Issued           5,042,017          
February 2020 Offering [Member] | Class A Unit [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Number of shares issued   10,084,034                  
Share issued exercise price per share   $ 0.595                  
February 2020 Offering [Member] | Common Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share issued exercise 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                
Payment of stock issuance costs     $ 404,000                
Warrants outstanding           1,094,030          
Fair Value Adjustment of Warrants           $ 356,000 2,900,000        
November 2019 Offering [Member] | Class A Unit [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Number of shares issued     10,450,000                
November 2019 Offering [Member] | Common Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share issued exercise price per share     $ 0.50                
Common stock sold through ATM offering     $ 768,000                
November 2019 Offering [Member] | Class B Units [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Number of shares issued     1,550,000                
Share issued exercise price per share     $ 0.4999                
November 2019 Offering [Member] | Pre Funded Warrants [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share issued exercise price per share     0.0001                
Warrant exercise price per share     $ 0.50                
November 2019 Offering [Member] | Additional Paid-in Capital [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Common stock sold through ATM offering     $ 4,800,000                
ATM Market Offering [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Proceeds from issuance of common stock gross           $ 32,900,000          
Number of shares issued           15,023,073          
Share issued exercise price per share           $ 2.19          
Proceeds from Issuance or Sale of Equity           $ 31,700,000          
ATM Market Offering [Member] | Sales Agreement [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Payment of stock issuance costs           $ 112,000 $ 148,000        
Number of shares issued           1,811,238 3,746,300        
Share issued exercise price per share           $ 1.95 $ 1.41        
ATM Market Offering [Member] | Sale Agreement [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Proceeds from Issuance or Sale of Equity           $ 3,400,000 $ 5,100,000        
ATM Market Offering [Member] | Sale Agreement [Member] | Common Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Proceeds from issuance of common stock gross             3,900,000        
Payment of stock issuance costs             $ 165,000        
Number of shares issued             2,830,000        
Share issued exercise price per share             $ 1.43