COMMITMENTS AND CONTINGENCIES (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Guarnator Obligations [Line Items]
Guarantees extension period	1 year
Operating Leases, Rent Expense, Net [Abstract]
Operating lease rent expense	$ 7,000,000	$ 6,800,000	$ 6,900,000
Reserve requirement	29,000,000	22,300,000
Minimum [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease renewal period option	1 year
Maximum [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease renewal period option	10 years
Affiliated Entity [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease rent expense	991,000	1,100,000	1,000,000
Standby Letter of Credit [Member]
Guarnator Obligations [Line Items]
Guarantees recorded liability	$ 151,000	$ 88,000