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Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)
Public Offering [Member]
Common Stock [Member]
Public Offering [Member]
Additional Paid-in Capital [Member]
Public Offering [Member]
Retained Earnings [Member]
Public Offering [Member]
Warrants Issued in Connection with Convertible Notes [Member]
Common Stock [Member]
Warrants Issued in Connection with Convertible Notes [Member]
Additional Paid-in Capital [Member]
Warrants Issued in Connection with Convertible Notes [Member]
Retained Earnings [Member]
Warrants Issued in Connection with Convertible Notes [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2019                 1,812,483      
Balance at Dec. 31, 2019                 $ 182 $ 87,437,661 $ (89,723,016) $ (2,285,173)
Issuance of common stock for directors’ fees (in shares)                 5,270      
Issuance of common stock for directors’ fees                 $ 0 28,511 0 28,511
Issuance of common stock pursuant to securities purchase agreements (in shares) 4,264,313               43,939      
Issuance of common stock pursuant to securities purchase agreements $ 426 $ 22,173,999 $ 0 $ 22,174,425         $ 5 277,828 0 277,833
Issuance of common stock pursuant to warrant exercises (in shares)                 918,538      
Issuance of common stock pursuant to warrant exercises                 $ 92 5,602,503 0 5,602,595
Issuance of common stock for conversion of convertible note payable (in shares)                 728,654      
Issuance of common stock for conversion of convertible note payable                 $ 73 3,788,927 0 3,789,000
Issuance of restricted common stock to employees (in shares)                 41,375      
Issuance of restricted common stock to employees                 $ 4 (4) 0 0
Warrants issued         $ 0 $ 1,388,339 $ 0 $ 1,388,339 0 107,576 0 107,576
Legal and commitment fees                 0 (2,371,223) 0 (2,371,223)
Beneficial conversion feature                 0 641,215 0 641,215
Deemed dividends related to down-round features                 0 112,686 (112,686) 0
Share-based compensation                 0 656,008 0 656,008
Net loss                 $ 0 0 (9,673,987) (9,673,987)
Balance (in shares) at Dec. 31, 2020                 7,814,572      
Balance at Dec. 31, 2020                 $ 782 119,844,026 (99,509,689) 20,335,119
Issuance of common stock for directors’ fees (in shares)                 7,828      
Issuance of common stock for directors’ fees                 $ 1 25,535 0 25,536
Issuance of restricted common stock to employees (in shares)                 13,125      
Issuance of restricted common stock to employees                 $ 1 (1) 0 0
Share-based compensation                 0 278,499 0 278,499
Net loss                 $ 0 0 (5,065,781) (5,065,781)
Forfeiture of restricted stock (in shares)                 (1,250)      
Forfeiture of restricted stock                 $ 0 0 0 0
Legal fees                 $ 0 (5,228) 0 (5,228)
Issuance of common stock for Employee stock purchase plan (in shares)                 19,484      
Issuance of common stock for Employee stock purchase plan                 $ 2 36,628 0 36,630
Share based compensation for employee stock purchase plan                 $ 0 10,680 0 10,680
Balance (in shares) at Dec. 31, 2021                 7,853,759      
Balance at Dec. 31, 2021                 $ 786 $ 120,190,139 $ (104,575,470) $ 15,615,455