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1. BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 1) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Numerator    
Net income $ 8,075,120 $ 6,466,964
Denominator    
Basic: Weighted-average common shares outstanding during the period 46,793,791 46,007,120
Add: Dilutive effect of stock options 10,450 733,206
Diluted 46,804,241 46,740,326
Net income per share    
Basic $ 0.17 $ 0.14
Diluted $ 0.17 $ 0.14