COMMITMENTS AND CONTINGENCIES (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Leases, Rent Expense, Net [Abstract]
Operating lease rent expense	$ 8.6	$ 8.5	$ 8.2
Reserve requirement	$ 35.8	$ 31.8
Minimum [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease renewal period option	4 months
Maximum [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease renewal period option	10 years