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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings per share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings per share
Stock options excluded from calculation of diluted EPS	93,125	670,338	128,540	674,042
Net loss	$ (66,626)	$ (125,304)	$ (2,605,917)	$ (1,721,089)
Preferred dividend requirements	(176,249)	(176,249)	(528,747)	(528,747)
Loss applicable to common shareholders	$ (242,875)	$ (301,553)	$ (3,134,664)	$ (2,249,836)
Average common shares outstanding	32,166,454	29,649,874	31,722,010	29,252,652
Average common and common equivalent shares outstanding - assuming dilution	32,166,454	29,649,874	31,722,010	29,252,652
Basic loss per share (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.10)	$ (0.08)
Diluted loss per share (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.10)	$ (0.08)

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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