Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) | Common Stock | Accumulated Deficit | Total |
Beginning balance, shares at Dec. 31, 2017 | 20,783,032 | | |
Beginning balance, amount at Dec. 31, 2017 | $ 24,322,885 | $ (13,674,794) | $ 10,648,091 |
Effects of new accounting standards | | 142,857 | 142,857 |
Net income | | 814,697 | 814,697 |
Amortization of value of employee stock options | $ 14,158 | | 14,158 |
Conversion of convertible note to common stock, shares | 400,000 | | |
Conversion of convertible note to common stock, amount | $ 200,000 | | 200,000 |
Ending balance, shares at Jun. 30, 2018 | 21,183,032 | | |
Ending balance, amount at Jun. 30, 2018 | $ 24,537,043 | (12,717,240) | 11,819,803 |
Beginning balance, shares at Mar. 31, 2018 | 20,983,032 | | |
Beginning balance, amount at Mar. 31, 2018 | $ 24,726,636 | (13,433,138) | 11,293,498 |
Effects of new accounting standards | (303,751) | 303,751 | |
Net income | | 412,147 | 412,148 |
Amortization of value of employee stock options | $ 14,158 | | 14,158 |
Conversion of convertible note to common stock, shares | 200,000 | | |
Conversion of convertible note to common stock, amount | $ 100,000 | | 100,000 |
Ending balance, shares at Jun. 30, 2018 | 21,183,032 | | |
Ending balance, amount at Jun. 30, 2018 | $ 24,537,043 | (12,717,240) | 11,819,803 |
Beginning balance, shares at Dec. 31, 2018 | 21,583,032 | | |
Beginning balance, amount at Dec. 31, 2018 | $ 24,739,482 | (16,594,146) | 8,145,336 |
Effects of new accounting standards | | (52,315) | (52,315) |
Net income | | 917,396 | 917,396 |
Amortization of value of employee stock options | $ 8,087 | | 8,087 |
Cashless exercise of warrants, shares | 232,381 | | |
Conversion of convertible note to common stock, shares | 100,000 | | |
Conversion of convertible note to common stock, amount | $ 50,000 | | 50,000 |
Ending balance, shares at Jun. 30, 2019 | 21,915,313 | | |
Ending balance, amount at Jun. 30, 2019 | $ 24,797,569 | (15,729,065) | 9,068,504 |
Beginning balance, shares at Mar. 31, 2019 | 21,683,032 | | |
Beginning balance, amount at Mar. 31, 2019 | $ 24,789,482 | (16,170,201) | 8,619,281 |
Net income | | 441,136 | 441,136 |
Amortization of value of employee stock options | $ 8,087 | | 8,087 |
Cashless exercise of warrants, shares | 232,281 | | |
Ending balance, shares at Jun. 30, 2019 | 21,915,313 | | |
Ending balance, amount at Jun. 30, 2019 | $ 24,797,569 | $ (15,729,065) | $ 9,068,504 |