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Shareholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2019
Equity [Abstract] |
Schedule of stockholders equity | Changes in Shareholders’ Equity
|  | Six Months Ended June 30, 2019 (Unaudited)
|  | Common Stock |  | Treasury Stock |  | Additional Paid-In Capital |  | Accumulated Deficit |  | Total
January 1, 2019 |  | $ | 38,967 |  |  | $ | (18,929,915 | ) |  | $ | 94,385,230 |  |  | $ | (33,043,113 | ) |  | $ | 42,451,169 |
Stock-based compensation |  | — |  |  | — |  |  | 309,563 |  |  | — |  |  | 309,563 |
Net loss |  | — |  |  | — |  |  | — |  |  | (2,175,258 | ) |  | (2,175,258 | )
March 31, 2019 |  | 38,967 |  |  | (18,929,915 | ) |  | 94,694,793 |  |  | (35,218,371 | ) |  | 40,585,474 |
Stock issued |  | 398 |  |  | — |  |  | 148,782 |  |  | — |  |  | 149,180 |
Stock-based compensation |  | — |  |  | — |  |  | 580,603 |  |  | — |  |  | 580,603 |
Net loss |  | — |  |  | — |  |  | — |  |  | (2,695,792 | ) |  | (2,695,792 | )
June 30, 2019 |  | $ | 39,365 |  |  | $ | (18,929,915 | ) |  | $ | 95,424,178 |  |  | $ | (37,914,163 | ) |  | $ | 38,619,465 |
|  | Six Months Ended June 30, 2018 (Unaudited)
|  | Common Stock |  | Treasury Stock |  | Additional Paid-In Capital |  | Accumulated Deficit |  | Total
January 1, 2018 |  | $ | 38,937 |  |  | $ | (16,625,873 | ) |  | $ | 93,913,557 |  |  | $ | (27,351,357 | ) |  | $ | 49,975,264 |
Stock repurchased |  | — |  |  | (374,820 | ) |  | — |  |  | — |  |  | (374,820 | )
Stock-based compensation |  | — |  |  | — |  |  | 269,596 |  |  | — |  |  | 269,596 |
Net loss |  | — |  |  | — |  |  | — |  |  | (2,043,292 | ) |  | (2,043,292 | )
March 31, 2018 |  | 38,937 |  |  | (17,000,693 | ) |  | 94,183,153 |  |  | (29,394,649 | ) |  | 47,826,748 |
Stock-based compensation |  | — |  |  | — |  |  | 73,425 |  |  | — |  |  | 73,425 |
Net loss |  | — |  |  | — |  |  | — |  |  | (1,596,637 | ) |  | (1,596,637 | )
June 30, 2018 |  | $ | 38,937 |  |  | $ | (17,000,693 | ) |  | $ | 94,256,578 |  |  | $ | (30,991,286 | ) |  | $ | 46,303,536 |
Schedule of stock repurchase activity | The following table summarizes the Company’s stock repurchase activities:
Period |  | Total Number of Shares Purchased |  | Average Price Paid per Share |  | Amount |  | Total Number of Treasury Shares Purchased as Part of Publicly Announced Plan |  | Maximum Dollar Value of Shares that May Yet Be Purchased Under the Plan
Privately Negotiated Transactions: |  |  |  |  |  |  |  |  |  |
January 12, 2016 - Abengoa repurchased and retired shares |  | 2,136,752 |  |  | $ | 1.35 |  |  | $ | 2,884,615 |  |  | — |  |  | N/A
January 11, 2017 - Pinnacle Family Office Investments L.P. repurchased shares |  | 2,363,590 |  |  | 1.54 |  |  | 3,639,929 |  |  | 2,363,590 |  |  | N/A
|  |  |  |  |  |  |  |  |  | $ | 15,000,000 |
2016 Stock Repurchase Program (1): |  |  |  |  |  |  |  |  |  |
January through February 2017 |  | 7,863,980 |  |  | 1.58 |  |  | 12,448,283 |  |  | 7,863,980 |  |  | $ | 2,551,717 |
2017 Stock Repurchase Program: |  |  |  |  |  |  |  |  |  | $ | 5,000,000 |
September through December 2017 |  | 381,607 |  |  | 1.41 |  |  | 537,661 |  |  | 381,607 |  |  | $ | 4,462,339 |
January through August 2018 |  | 1,644,325 |  |  | 1.40 |  |  | 2,304,042 |  |  | 1,644,325 |  |  | $ | 2,158,297 |
Total open market and privately negotiated purchases |  | 14,390,254 |  |  | $ | 1.52 |  |  | $ | 21,814,530 |  |  | 12,253,502 |  |  |
_________________ Notes: (1) The 2016 Stock Repurchase Program ended on February 15, 2017.

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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