Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity

v3.8.0.1
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2015 13,070,180   534,000    
Balance at Dec. 31, 2015 $ 13,070 $ 35,267,376 $ (791,638) $ (13,809,502) $ 20,679,306
Stock-based compensation expense 1,123,481 1,123,481
Issuance of vested restricted stock (in shares) 162,441      
Issuance of vested restricted stock $ 162 (162)
Exercise of stock options (in shares) 37,824      
Exercise of stock options $ 38 70,893 70,931
Issuance of common stock, offering costs adjustment (1,042) (1,042)
Purchases of treasury stock under employee stock plans $ (83,391) (83,391)
Purchases of treasury stock under employee stock plans (in shares)     13,376    
Sale of treasury stock (161,911) $ 371,911 210,000
Sale of treasury stock (in shares)     (250,872)    
Issuance of common stock (in shares) 46,948        
Issuance of common stock $ 47 99,953 100,000
Net loss (15,173,872) (15,173,872)
Balance (in shares) at Dec. 31, 2016 13,317,393   296,504    
Balance at Dec. 31, 2016 $ 13,317 36,398,588 $ (503,118) (28,983,374) 6,925,413
Stock-based compensation expense 594,371 594,371
Issuance of vested restricted stock (in shares) 76,070        
Issuance of vested restricted stock $ 76 (76)
Exercise of stock options (in shares) 206,875        
Exercise of stock options $ 207 364,043 364,250
Purchases of treasury stock under employee stock plans $ (2,655) (2,655)
Purchases of treasury stock under employee stock plans (in shares)   708    
Sale of treasury stock (127,057) $ 419,728 292,671
Sale of treasury stock (in shares)   (283,128)    
Net loss (3,275,233) (3,275,233)
Balance (in shares) at Dec. 31, 2017 13,600,338   14,084    
Balance at Dec. 31, 2017 $ 13,600 $ 37,229,869 $ (86,045) $ (32,258,607) $ 4,898,817