Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Schedule of Activity of Warrants) (Details)

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STOCKHOLDERS' EQUITY (Schedule of Activity of Warrants) (Details) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Number of Warrants    
Outstanding at beginning of period 154,429 160,143
Warrants expired, forfeited, cancelled or exercised (102,800)  
Outstanding at end of period 311,898 154,429
Exercisable at end of period 162,474 145,857
Weighted Avg. Exercise Price    
Outstanding at beginning of period $ 14.00 $ 14.00
Warrants expired 14.00  
Outstanding at end of period 5.46 14.00
Exercisable at end of period $ 6.08 $ 14.00
Remaining Contractual Life (Years)    
Outstanding at end of period 4 years 8 months 12 days 3 years 4 months 24 days
Exercisable at end of period 4 years 8 months 12 days 3 years 4 months 24 days
Warrant [Member]    
Number of Warrants    
Outstanding at beginning of period 1,487,570 1,815,182
Warrants expired, forfeited, cancelled or exercised (327,612)
Warrants issued 67,500  
Outstanding at end of period 1,588,750 1,487,570
Exercisable at end of period 1,521,250 1,487,570
Weighted Avg. Exercise Price    
Outstanding at beginning of period $ 8.78 $ 9.52
Warrants issued 9.00  
Outstanding at end of period 8.79 8.78
Exercisable at end of period $ 8.41 $ 8.78
Remaining Contractual Life (Years)    
Outstanding at beginning of period 2 years 9 months 18 days 3 years 10 months 25 days
Warrants issued 2 years 7 months 6 days  
Outstanding at end of period 4 years 9 months 18 days 2 years 9 months 18 days
Exercisable at end of period 2 years 8 months 12 days 2 years 9 months 18 days