FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments related to PSB acquisition	$ 76,400,000
Financial instruments whose contract amounts represent credit risk [Abstract]
Contract or Notional Amount	237,085,000	152,145,000
Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments related to PSB acquisition	1,600,000
Financial instruments whose contract amounts represent credit risk [Abstract]
Contract or Notional Amount	$ 9,958,000	$ 8,347,000
Letters of credit secured by marketable securities (in hundredths)	88.00%	90.00%