Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY (Details)

v3.8.0.1
STOCKHOLDERS' EQUITY (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Options exercised 165,400 25,900 65,600
Exercise price $ 2.63 $ 4.41 $ 3.46
Shares issued 133,308 25,734 57,475
Shares retained 32,092 166 8,125
Cash paid at exercise $ 0 $ 112,500 $ 134,800
Stock price on date of exercise $ 13.18 $ 6.93 $ 10.73
Aggregate value of shares retained $ 435,785 $ 1,800 $ 92,500
Exercised Option 1 [Member]      
Options exercised 4,100 5,000 10,000
Exercise price $ 2.00 $ 4.50 $ 2.00
Shares issued 3,491 5,000 8,115
Shares retained 609 0 1,885
Cash paid at exercise $ 0 $ 22,500 $ 0
Stock price on date of exercise $ 13.47 $ 4.72 $ 10.61
Aggregate value of shares retained $ 8,200 $ 0 $ 20,000
Exercised Option 2 [Member]      
Options exercised 60,000 20,000 5,000
Exercise price $ 2.00 $ 4.50 $ 4.50
Shares issued 50,156 20,000 5,000
Shares retained 9,844 0 0
Cash paid at exercise $ 0 $ 90,000 $ 22,500
Stock price on date of exercise $ 12.19 $ 7.29 $ 10.00
Aggregate value of shares retained $ 120,000 $ 0 $ 0
Exercised Option 3 [Member]      
Options exercised 200 150 20,000
Exercise price $ 8.00 $ 2.00 $ 2.00
Shares issued 116 119 20,000
Shares retained 84 31 0
Cash paid at exercise $ 0 $ 0 $ 40,000
Stock price on date of exercise $ 13.75 $ 9.72 $ 10.14
Aggregate value of shares retained $ 1,600 $ 300 $ 0
Exercised Option 4 [Member]      
Options exercised 1,500 350 10,000
Exercise price $ 10.89 $ 2.00 $ 4.50
Shares issued 1,188 276 6,127
Shares retained 312 74 3,873
Cash paid at exercise $ 0 $ 0 $ 0
Stock price on date of exercise $ 13.75 $ 9.46 $ 11.62
Aggregate value of shares retained $ 16,335 $ 700 $ 45,000
Exercised Option 5 [Member]      
Options exercised 600 400 5,000
Exercise price $ 5.25 $ 2.00 $ 5.50
Shares issued 229 339 2,633
Shares retained 371 61 2,367
Cash paid at exercise $ 0 $ 0 $ 0
Stock price on date of exercise $ 13.75 $ 13.05 $ 11.62
Aggregate value of shares retained $ 3,150 $ 800 $ 27,500
Exercised Option 6 [Member]      
Options exercised 20,000   15,000
Exercise price $ 5.50   $ 4.50
Shares issued 11,953   15,000
Shares retained 8,047   0
Cash paid at exercise $ 0   $ 67,500
Stock price on date of exercise $ 13.67   $ 11.06
Aggregate value of shares retained $ 110,000   $ 0
Exercised Option 7 [Member]      
Options exercised 2,000   600
Exercise price $ 8.00   $ 8.00
Shares issued 830   600
Shares retained 1,170   0
Cash paid at exercise $ 0   $ 4,800
Stock price on date of exercise $ 13.67   $ 8.07
Aggregate value of shares retained $ 16,000   $ 0
Exercised Option 8 [Member]      
Options exercised 2,000    
Exercise price $ 5.25    
Shares issued 1,232    
Shares retained 768    
Cash paid at exercise $ 0    
Stock price on date of exercise $ 13.67    
Aggregate value of shares retained $ 10,500    
Exercised Option 9 [Member]      
Options exercised 15,000    
Exercise price $ 2.00    
Shares issued 12,875    
Shares retained 2,125    
Cash paid at exercise $ 0    
Stock price on date of exercise $ 14.12    
Aggregate value of shares retained $ 30,000    
Exercised Option 10 [Member]      
Options exercised 60,000    
Exercise price $ 2.00    
Shares issued 51,238    
Shares retained 8,762    
Cash paid at exercise $ 0    
Stock price on date of exercise $ 13.70    
Aggregate value of shares retained $ 120,000