Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY (Details 1)

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STOCKHOLDERS' EQUITY (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Number of options, outstanding    
Outstanding, beginning of period (in shares) 2,010,000 2,310,000
Granted (in shares)
Expired (in shares)
Exercised (in shares) (375,000) (300,000)
Outstanding, end of period (in shares) 1,635,000 2,010,000
Exercisable, end of period (in shares) $ 1,635,000 $ 2,010,000
Weighted average exercise price    
Outstanding, beginning of period (in dollars per share) $ 1.28 $ 1.29
Granted (in dollars per share)
Expired (in dollars per shares)
Exercised (in dollars per share) 1.74 1.31
Outstanding, end of period (in dollars per share) 1.18 1.28
Exercisable, end of period (in dollars per share) $ 1.18 $ 1.28