RIGHTS AGREEMENT (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
RIGHTS AGREEMENT [Abstract]
Preferred stock dividend declared for each common stock (in shares)	1
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Minimum combined ownership of outstanding shares of common stock by acquiring person	20.00%