NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) (Non-covered loans, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012
Troubled debt restructuring disclosures
Number of notes into which A/B notes are split	2
CRE
Troubled debt restructuring disclosures
Loan balance of restructured loans	8,600	$ 17,500	$ 9,200
C&I
Troubled debt restructuring disclosures
Loan balance of restructured loans	3,200	15,600	5,000
Residential
Troubled debt restructuring disclosures
Loan balance of restructured loans	12,000	1,100	33,700
Consumer
Troubled debt restructuring disclosures
Loan balance of restructured loans	504	$ 639	$ 108