Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Earnings (Loss) Per Common Share (Details)

v3.10.0.1
Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Earnings (Loss) Per Common Share (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Net loss and comprehensive loss $ (151,803) $ (431,705) $ (581,486) $ (3,219,232)
Weighted average common shares outstanding - basic (in shares) 13,727,712 13,262,032 13,646,599 13,144,764
Effect of dilutive securities:        
Unvested restricted stock, stock options and warrants (in shares)
Weighted average common shares outstanding - diluted (in shares) 13,727,712 13,262,032 13,646,599 13,144,764
Basic and diluted loss per share (in dollars per share) $ (0.01) $ (0.03) $ (0.04) $ (0.24)
Restricted Stock [Member]        
Effect of dilutive securities:        
Anti-dilutive securities (in shares) 51,134 63,700 51,134 63,700
Employee Stock Option [Member]        
Effect of dilutive securities:        
Anti-dilutive securities (in shares) 960,213 1,011,686 960,213 1,011,686
Warrant [Member]        
Effect of dilutive securities:        
Anti-dilutive securities (in shares) 90,000 90,000 90,000 90,000