SHAREHOLDERS' EQUITY - (Summary Information about Stock Options Outstanding and Exercisable) (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares shares
Equity [Abstract]
Exercise price range lower limit	$ 2.45
Exercise price range upper limit	$ 4.40
Share outstanding and exercisable (in shares) | shares	50,351
Weighted Average Remaining Contractual Term (in years)	3 years 9 months 15 days
Weighted Average Exercise Price	$ 3.72
Aggregate intrinsic value | $	$ 647,010