XML 46 R34.htm IDEA: XBRL DOCUMENT v3.20.2
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)