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Consolidated Statements of Stockholders' Equity - USD ($)
Conversion of A1 Preferred Stock to Common Stock [Member]
Preferred Stock [Member]
Series A-1 Convertible Preferred Stock [Member]
Conversion of A1 Preferred Stock to Common Stock [Member]
Common Stock [Member]
Conversion of A1 Preferred Stock to Common Stock [Member]
Additional Paid-in Capital [Member]
Conversion of A1 Preferred Stock to Common Stock [Member]
Retained Earnings [Member]
Conversion of A1 Preferred Stock to Common Stock [Member]
Conversion of B1 Preferred Stock to Common Stock [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Conversion of B1 Preferred Stock to Common Stock [Member]
Common Stock [Member]
Conversion of B1 Preferred Stock to Common Stock [Member]
Additional Paid-in Capital [Member]
Conversion of B1 Preferred Stock to Common Stock [Member]
Retained Earnings [Member]
Conversion of B1 Preferred Stock to Common Stock [Member]
Preferred Stock [Member]
Series A-1 Convertible Preferred Stock [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Series A-1 Convertible Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Total
Balance (in shares) at Dec. 31, 2016                     90,000 105,000 6,093,843     90,000 105,000  
Balance at Dec. 31, 2016                     $ 9 $ 11 $ 609 $ 78,253,413 $ (62,801,154)     $ 15,452,888
Issuance of common stock for directors’ fees (in shares)                     11,244         1,610
Issuance of common stock for directors’ fees                     $ 1 32,029     $ 32,030
Issuance of common stock pursuant to securities purchase agreement (in shares)                     555,556          
Issuance of common stock pursuant to securities purchase agreement                     $ 56 1,999,944     2,000,000
Dividends declared on preferred stock                     (769,158)     (769,158)
Conversion of dividends payable on A-1 preferred stock (in shares)                     150,000          
Conversion of dividends payable on A-1 preferred stock                     $ 15 539,985     540,000
Conversion of preferred stock to common stock, Converted (in shares) (27,404)                                  
Conversion of preferred stock to common stock, Converted $ (3)                                  
Conversion of preferred stock to common stock (in shares)   761,222                                
Conversion of preferred stock to common stock   $ 76 $ (73)                          
Issuance of stock for consultants (in shares)                     117,849          
Issuance of stock for consultants                     $ 12 354,573     354,585
Stock issuance costs                     (80,366)     $ (80,366)
Exercise of stock options (in shares)                     1,610         4,167
Share-based compensation                     498,654     $ 498,654
Net loss                     (4,275,338)     (4,275,338)
Conversion of preferred stock to common stock, Converted (in shares) 27,404                                  
Conversion of preferred stock to common stock, Converted $ 3                                  
Balance (in shares) at Dec. 31, 2017                     62,596 105,000 7,691,324     62,596 105,000  
Balance at Dec. 31, 2017                     $ 6 $ 11 $ 769 80,829,001 (67,076,492)     13,753,295
Issuance of common stock for directors’ fees (in shares)                     20,976          
Issuance of common stock for directors’ fees                     $ 2 37,530     37,532
Issuance of common stock pursuant to securities purchase agreement (in shares)                     1,380,000          
Issuance of common stock pursuant to securities purchase agreement                     $ 138 2,069,862     2,070,000
Dividends declared on preferred stock                     (198,033)     (198,033)
Conversion of dividends payable on A-1 preferred stock (in shares)                     98,893          
Conversion of dividends payable on A-1 preferred stock                     $ 10 356,005     356,015
Conversion of preferred stock to common stock, Converted (in shares) 62,596         105,000                        
Conversion of preferred stock to common stock, Converted $ 6         $ 11                        
Conversion of preferred stock to common stock (in shares)   1,738,778         2,916,668                      
Conversion of preferred stock to common stock   $ 174 $ (168)   $ 292 $ (281)                
Stock issuance costs                     (338,845)     $ (338,845)
Exercise of stock options (in shares)                                   0
Share-based compensation                     942,692     $ 942,692
Net loss                     (6,868,875)     (6,868,875)
Adoption of ASC 606                     240,017     240,017
Conversion of preferred stock to common stock, Converted (in shares) (62,596)         (105,000)                        
Conversion of preferred stock to common stock, Converted $ (6)         $ (11)                        
Conversion of dividends payable on B-1 preferred stock (in shares)                     131,229          
Conversion of dividends payable on B-1 preferred stock                     $ 13 472,411     472,424
Deemed dividend related to down-round features                     1,428,966 (1,428,966)    
Balance (in shares) at Dec. 31, 2018                     13,977,868      
Balance at Dec. 31, 2018                     $ 1,398 $ 85,599,140 $ (75,134,316)     $ 10,466,222