Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY- Common stock issued in option exercise (Details)

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STOCKHOLDERS' EQUITY- Common stock issued in option exercise (Details) - USD ($)
12 Months Ended
Feb. 25, 2019
Dec. 31, 2019
Dec. 31, 2018
Options exercised   193,000  
Exercise price   $ 2.96  
Shares issued 153,113 153,113  
Shares retained   39,887  
Cash paid at exercise   $ 100,000 $ 100,000
Stock price on date of exercise   $ 10.58  
Aggregate value of shares retained   $ 470,750  
Exercised Option 1      
Options exercised     110,000
Exercise price     $ 2.00
Shares issued     90,375
Shares retained     19,625
Cash paid at exercise     $ 0
Stock price on date of exercise     $ 11.21
Aggregate value of shares retained     $ 220,000
Exercised Option 2      
Options exercised     50,000
Exercise price     $ 2.00
Shares issued     50,000
Cash paid at exercise     $ 100,000
Stock price on date of exercise     $ 8.00
Exercised Option 3      
Options exercised     25,000
Exercise price     $ 7.50
Shares issued     9,829
Shares retained     15,171
Cash paid at exercise     $ 0
Stock price on date of exercise     $ 12.36
Aggregate value of shares retained     $ 187,500
Exercised Option 4      
Options exercised     3,000
Exercise price     $ 8.00
Shares issued     1,059
Shares retained     1,941
Cash paid at exercise     $ 0
Stock price on date of exercise     $ 12.36
Aggregate value of shares retained     $ 24,000
Exercised Option 5      
Options exercised     3,000
Exercise price     $ 5.25
Shares issued     1,750
Shares retained     1,250
Cash paid at exercise     $ 0
Stock price on date of exercise     $ 12.36
Aggregate value of shares retained     $ 15,750
Exercised Option 6      
Options exercised     2,000
Exercise price     $ 11.75
Shares issued     100
Shares retained     1,900
Cash paid at exercise     $ 0
Stock price on date of exercise     $ 12.36
Aggregate value of shares retained     $ 23,500