FAIR VALUE OF FINANCIAL INSTRUMENTS, Valuation Techniques (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted Average Loan To Value Ratio Of Mortgages Underlying Security (in hundredths)	41.00%
Percentage Of Underlying Mortgages Located In California (in hundredths)	20.00%
Fair Value Asset Valuation Approach Broker Quotation Weighting (in hundredths)	10.00%
Fair Value Asset Valuation Approach Internal Cash Flow Valuation Model Weighting (in hundredths)	45.00%
Fair Value Asset Valuation Approach Independent Cash Flow Valuation Model Weighting (in hundredths)	45.00%
Fair Value Inputs Range For Probability Of Default	5% to 75%
Fair Value Inputs Standard Default Rate Description	1.20%
Fair Value Asset Valuation Approach Cash Flow Model Estimated Recovery Rate (in hundredths)	10.00%
Purchase discount rate on Trust Preferred valuation minimum value	1.80%
Purchase discount maximum value	2.70%
The weighted average value of the purchase discount rate used in the internal model cash flow valuation of Trust Preferred securities	2.40%
Current Discount Rate Trust Preferred Valuation Minumum Value	4.80%
Current discount rate trust preferred valuation maximum value	9.40%
Current discount trust preferred valuation weighted average rate- Pooled Trust Preferred Held To Maturity Securities [Member]	6.10%
Utilized default rates trust preferred valuation minimum value	0.00%
Utilized default rates trust preferred valuation maximum value	5.10%
Utilized default rates trust preferred valuation weighted average value	2.00%
Agency Securities [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Asset Valuation Percent Of Total Investment (in hundredths)	36.50%	63.40%
Fair Value Asset Valuation Valuation Level	Two	Two
Pass Through MBS Or CMO Issued By Entities Other Than Gses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Asset Valuation Percent Of Total Investment (in hundredths)	1.50%	1.10%
Pass Through MBS or CMO Issued By GSEs [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Asset Valuation Percent Of Total Investment (in hundredths)	58.30%	33.80%
Fair Value Asset Valuation Valuation Level	Two	Two
Registered Mututal Funds Member [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Asset Valuation Percent Of Total Investment (in hundredths)	3.70%	1.70%
Fair Value Asset Valuation Valuation Level	One	One
Pass Through MBS Issued By Entities Other Than GSEs [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Amortized cost of private issuer pass through mortgage backed security or private issuer CMO	1,068
Investment Weighted Average Interest Rate (in hundredths)	5.00%
Weighted Average Coupon Rate Of Mortgages Underlying Security (in hundredths)	5.21%
Description of the level of delinquency on mortgage loans	20%
CMO Issued By Entities Other Than GSEs [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Amortized cost of private issuer pass through mortgage backed security or private issuer CMO	1,015
Investment Weighted Average Interest Rate (in hundredths)	4.50%
Weighted Average Coupon Rate Of Mortgages Underlying Security (in hundredths)	5.38%
Weighted Average Loan To Value Ratio Of Mortgages Underlying Security (in hundredths)	25.00%
Percentage Of Underlying Mortgages Located In California (in hundredths)	43.00%
Description of the level of delinquency on mortgage loans	Less than 3%
Private Issuer MBS Or CMO [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Asset Valuation Valuation Level	Two	Two