NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 8) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Performing loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	$ 94,600	$ 99,600
Nonperforming loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	10,000	38,900
A/B Note Splits | Performing loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	34,800	22,800
Residential | Performing loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	43,500	19,100
Residential | Nonperforming loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	5,100	2,700
Residential | A/B Note Splits
Troubled debt restructuring disclosures
Loan balance of restructured loans	21,000
Residential | Modifications using non-market interest rate changes, maturity extensions and/or AB note splits
Troubled debt restructuring disclosures
Loan balance of restructured loans		7,900
Residential | Modifications using principal and/or interest deferment, and/or rate reduction
Troubled debt restructuring disclosures
Loan balance of restructured loans	12,700
Commercial Real Estate ("CRE") | Performing loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	47,400	60,200
Commercial Real Estate ("CRE") | Nonperforming loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	1,900	34,600
Commercial Real Estate ("CRE") | Modifications using non-market interest rate changes, maturity extensions and/or AB note splits
Troubled debt restructuring disclosures
Loan balance of restructured loans	9,200
Commercial Real Estate ("CRE") | Modifications using A/B Note Splits and/or maturity extensions
Troubled debt restructuring disclosures
Loan balance of restructured loans		40,600
Commercial Real Estate ("CRE") | Modifications using forbearance payments, and/or non-market interest changes
Troubled debt restructuring disclosures
Loan balance of restructured loans		27,900
Commercial and Industrial ("C&I") | Performing loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	3,600	20,300
Commercial and Industrial ("C&I") | Nonperforming loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	3,000	1,600
Commercial and Industrial ("C&I") | TDR (Types of Modifications)
Troubled debt restructuring disclosures
Loan balance of restructured loans	5,000	20,800
Consumer | Performing loan
Troubled debt restructuring disclosures
Loan balance of restructured loans	108
Consumer | Modifications using principal and/or interest deferment, and/or rate reduction
Troubled debt restructuring disclosures
Loan balance of restructured loans	$ 108