Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity

v3.10.0.1
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Total
Balances, December 31, 2016 (in shares) at Dec. 31, 2016 13,317,393   296,504    
Balances, December 31, 2016 at Dec. 31, 2016 $ 13,317 $ 36,398,588 $ (503,118) $ (28,983,374) $ 6,925,413
Cumulative effect of change in accounting principle - revenue (3,588,205) (3,588,205)
Stock-based compensation expense 594,371 594,371
Issuance of vested restricted stock (in shares) 76,070      
Issuance of vested restricted stock $ 76 (76)
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)    
Exercise of stock options (in shares) 206,875      
Exercise of stock options $ 207 364,043 364,250
Net loss and comprehensive loss (3,432,412) (3,432,412)
Balance (in shares) at Dec. 31, 2017 13,600,338   14,084    
Balance at Dec. 31, 2017 $ 13,600 37,229,869 $ (86,045) (36,003,991) 1,153,433
Stock-based compensation expense 628,430 628,430
Issuance of vested restricted stock (in shares) 61,700      
Issuance of vested restricted stock $ 62 (62)
Purchases of treasury stock under employee stock plans $ (4,811) (4,811)
Purchases of treasury stock under employee stock plans (in shares)     586    
Exercise of stock options (in shares) 95,162      
Exercise of stock options $ 95 331,014 331,109
Net loss and comprehensive loss 253,083 253,083
Balance (in shares) at Dec. 31, 2018 13,757,200   14,670    
Balance at Dec. 31, 2018 $ 13,757 $ 38,189,251 $ (90,856) $ (35,750,908) $ 2,361,244