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Condensed Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) - USD ($)
Common Stock
Additional Paid-in Capital
Retained Earnings (Accumulated Deficit)
Treasury Stock
Total
Balance at Dec. 31, 2018 $ 6,869 $ 19,867,259 $ (4,720,291)   $ 15,153,837
Balance (in Shares) at Dec. 31, 2018 6,868,679        
Stock-based compensation expense for restricted stock awards and stock options   452,525     452,525
Issuance of common stock for consulting services $ 6 34,494     34,500
Issuance of common stock for consulting services (in Shares) 6,000        
Net income     646,615   646,615
Balance, at Mar. 31, 2019 $ 6,875 20,354,278 (4,073,676)   16,287,477
Balance, (in Shares) at Mar. 31, 2019 6,874,679        
Balance at Dec. 31, 2018 $ 6,869 19,867,259 (4,720,291)   15,153,837
Balance (in Shares) at Dec. 31, 2018 6,868,679        
Net income         (483,921)
Balance, at Sep. 30, 2019 $ 6,875 21,135,715 (5,204,212)   15,938,378
Balance, (in Shares) at Sep. 30, 2019 6,874,679        
Balance at Mar. 31, 2019 $ 6,875 20,354,278 (4,073,676)   16,287,477
Balance (in Shares) at Mar. 31, 2019 6,874,679        
Stock-based compensation expense for restricted stock awards and stock options   443,661     443,661
Net income     443,384   443,384
Balance, at Jun. 30, 2019 $ 6,875 20,797,939 (3,630,292)   17,174,522
Balance, (in Shares) at Jun. 30, 2019 6,874,679        
Stock-based compensation expense for restricted stock awards and stock options   337,776     337,776
Net income     (1,573,920)   (1,573,920)
Balance, at Sep. 30, 2019 $ 6,875 21,135,715 (5,204,212)   15,938,378
Balance, (in Shares) at Sep. 30, 2019 6,874,679        
Balance at Dec. 31, 2019 $ 6,879 $ 21,281,382 (13,100,351) $ (2,015) $ 8,185,895
Balance (in Shares) at Dec. 31, 2019 6,878,904     (1,900)  
Stock-based compensation expense (in Shares)   89,206     89,206
Repurchases of common stock       $ (7,240) $ (7,240)
Repurchases of common stock (in Shares)       (6,600)  
Net income     (438,384)   (438,384)
Balance, at Mar. 31, 2020 $ 6,879 $ 21,370,588 (13,538,735) $ (9,255) 7,829,477
Balance, (in Shares) at Mar. 31, 2020 6,878,904     (8,500)  
Balance at Dec. 31, 2019 $ 6,879 21,281,382 (13,100,351) $ (2,015) 8,185,895
Balance (in Shares) at Dec. 31, 2019 6,878,904     (1,900)  
Net income         840,005
Balance, at Sep. 30, 2020 $ 6,917 21,518,940 (12,260,346) $ (10,859) 9,254,652
Balance, (in Shares) at Sep. 30, 2020 6,916,404     (9,950)  
Balance at Mar. 31, 2020 $ 6,879 $ 21,370,588 (13,538,735) $ (9,255) $ 7,829,477
Balance (in Shares) at Mar. 31, 2020 6,878,904     (8,500)  
Stock-based compensation expense (in Shares)   57,183     57,183
Repurchases of common stock       $ (1,604) $ (1,604)
Repurchases of common stock (in Shares)       (1,450)  
Net income     531,541   531,541
Balance, at Jun. 30, 2020 $ 6,879 $ 21,427,771 (13,007,194) $ (10,859) $ 8,416,597
Balance, (in Shares) at Jun. 30, 2020 6,878,904     (9,950)  
Stock-based compensation expense (in Shares)   47,707     47,707
Issuance of common stock for consulting services $ 38 $ 43,462     $ 43,500
Issuance of common stock for consulting services (in Shares) 37,500        
Net income     746,848   746,848
Balance, at Sep. 30, 2020 $ 6,917 $ 21,518,940 $ (12,260,346) $ (10,859) $ 9,254,652
Balance, (in Shares) at Sep. 30, 2020 6,916,404     (9,950)