EARNINGS PER SHARE (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income (loss) available to common shareholders	$ (5,546,243)	$ 7,879,470	$ 3,658,267
Denominator:
Weighted-average common shares outstanding	23,807,780	17,830,194	12,138,229
Basic earnings per share (in USD per share)	$ (0.23)	$ 0.44	$ 0.30
Numerator:
Net income (loss) available to common shareholders	$ (5,546,243)	$ 7,879,470	$ 3,658,267
Effect of dilutive securities
Stock options and warrants	0	1,033,633	1,215,014
Preferred stock	0	1,319,002	1,512,891
Shares used in computing earnings per share
Diluted weighted-average shares outstanding	23,807,780	20,182,829	14,866,134
Diluted earnings (loss) per share (in USD per share)	$ (0.23)	$ 0.39	$ 0.25