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1. BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 1) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator
Net income	$ 5,355,899	$ 5,688,674	$ 7,238,864	$ 8,975,781
Denominator
Basic: Weighted-average common shares outstanding during the period	38,367,471	34,560,743	38,367,471	34,560,743
Add: Dilutive effect of stock options	223,656	0	178,571	651
Diluted	38,591,127	34,560,743	38,546,042	34,561,394
Net income per share
Basic	$ 0.14	$ 0.16	$ 0.19	$ 0.26
Diluted	$ 0.14	$ 0.16	$ 0.19	$ 0.26

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