COMMON STOCK AND ADDITIONAL PAID-IN CAPITAL (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
COMMON STOCK AND ADDITIONAL PAID-IN CAPITAL [Abstract]
Dividends reinvestment plan (in shares)	13,600	17,500	21,000
Dividend reinvestment plan	$ 400,000	$ 384,000	$ 459,000