Shareholders' Equity - Changes in Shareholders’ Equity (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||||||
---|---|---|---|---|---|---|---|---|
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
Beginning balance | $ 32,093,205 | $ 34,252,271 | $ 35,864,471 | $ 38,619,465 | $ 40,585,474 | $ 42,451,169 | $ 35,864,471 | $ 42,451,169 |
Stock repurchased | 179,410 | |||||||
Stock-based compensation | 400,680 | 426,939 | 144,180 | 580,603 | 309,563 | 1,264,233 | ||
Exercise of stock options | 68 | 55,743 | 175,000 | 230,810 | ||||
Stock issued | 436,613 | 149,180 | ||||||
Net loss | (2,499,499) | (2,651,422) | (2,214,139) | (1,698,384) | (2,695,792) | (2,175,258) | (7,365,060) | (6,569,434) |
Ending balance | 29,994,454 | 32,093,205 | 34,252,271 | 37,244,671 | 38,619,465 | 40,585,474 | 29,994,454 | 37,244,671 |
Common Stock | ||||||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
Beginning balance | 39,736 | 39,713 | 39,613 | 39,365 | 38,967 | 38,967 | 39,613 | 38,967 |
Stock repurchased | 102 | |||||||
Exercise of stock options | 23 | 100 | 123 | |||||
Stock issued | 398 | |||||||
Ending balance | 39,736 | 39,736 | 39,713 | 39,467 | 39,365 | 38,967 | 39,736 | 39,467 |
Treasury Stock | ||||||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
Beginning balance | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) |
Ending balance | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) | (18,929,915) |
Additional paid-in capital | ||||||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
Beginning balance | 97,200,023 | 96,707,690 | 96,105,851 | 95,424,178 | 94,694,793 | 94,385,230 | 96,105,851 | 94,385,230 |
Stock repurchased | 179,308 | |||||||
Stock-based compensation | 400,680 | 426,939 | 144,180 | 580,603 | 309,563 | 1,264,233 | ||
Exercise of stock options | 68 | 55,720 | 174,900 | 230,687 | ||||
Stock issued | 436,613 | 148,782 | ||||||
Ending balance | 97,600,771 | 97,200,023 | 96,707,690 | 95,747,666 | 95,424,178 | 94,694,793 | 97,600,771 | 95,747,666 |
Accumulated deficit | ||||||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
Beginning balance | (46,216,639) | (43,565,217) | (41,351,078) | (37,914,163) | (35,218,371) | (33,043,113) | (41,351,078) | (33,043,113) |
Net loss | (2,499,499) | (2,651,422) | (2,214,139) | (1,698,384) | (2,695,792) | (2,175,258) | (7,365,060) | |
Ending balance | $ (48,716,138) | $ (46,216,639) | $ (43,565,217) | $ (39,612,547) | $ (37,914,163) | $ (35,218,371) | $ (48,716,138) | $ (39,612,547) |