SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings per share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings per share
Stock options excluded from calculation of diluted EPS		93,125	6,126	128,540
Net loss	$ (63,417)	$ (66,626)	$ (1,190,407)	$ (2,605,917)
Preferred stock dividend requirements	(176,249)	(176,249)	(528,747)	(528,747)
Loss applicable to common shareholders	$ (239,666)	$ (242,875)	$ (1,719,154)	$ (3,134,664)
Average common shares outstanding	32,666,454	32,166,454	32,666,454	31,722,010
Average common and common equivalent shares outstanding - assuming dilution	32,666,454	32,166,454	32,666,454	31,722,010
Basic loss per share (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.05)	$ (0.10)
Diluted loss per share (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.05)	$ (0.10)