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Condensed Shareholders Equity (Unaudited) - USD ($)
Common Stock
Additional Paid-In Capital
Retained Earnings / Accumulated Deficit
Total
Beginning Balance at Dec. 31, 2017 $ 7,011 $ 64,777,620 $ (47,554,208) $ 17,230,423
Beginning Balance (in shares) at Dec. 31, 2017 7,011,128      
Restricted stock grants 118 275,145   275,623
Restricted stock grants (in shares) $ 117,852      
Cost of tender offer $ (1,250) $ (5,018,616)   $ (5,019,866)
Cost of tender offer (in shares) (1,250,000)      
Stock-based compensation   $ 112,133    
Net income (loss)     $ (225,029) $ (225,029)
Ending Balance at Mar. 31, 2018 $ 5,879      
Ending Balance (in shares) at Mar. 31, 2018 5,878,980 60,146,282 (47,779,237) 12,372,924
Beginning Balance at Dec. 31, 2017 $ 7,011 $ 64,777,620 $ (47,554,208) $ 17,230,423
Beginning Balance (in shares) at Dec. 31, 2017 7,011,128      
Net income (loss)       (363,271)
Ending Balance at Jun. 30, 2018 $ 5,883 $ 60,267,071 $ (47,917,479) $ 12,355,475
Ending Balance (in shares) at Jun. 30, 2018 5,883,109      
Beginning Balance at Mar. 31, 2018 $ 5,879      
Beginning Balance (in shares) at Mar. 31, 2018 5,878,980 60,146,282 (47,779,237) 12,372,924
Exercise of stock options $ 4 $ 4,032   $ 4,036
Exercise of stock options (in shares) 4,129      
Cost of tender offer   (2,086)   (2,086)
Stock-based compensation   118,843   118,843
Net income (loss)     $ (138,242) (138,242)
Ending Balance at Jun. 30, 2018 $ 5,883 $ 60,267,071 $ (47,917,479) 12,355,475
Ending Balance (in shares) at Jun. 30, 2018 5,883,109      
Beginning Balance at Dec. 31, 2018       12,404,435
Stock-based compensation       259,000
Net income (loss)       131,629
Ending Balance at Jun. 30, 2019       $ 12,795,064