COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Liability	$ 705,332	$ 597,672
Number of other banks against whom substantially similar cases were filed, minimum	100
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Liability	680,780	572,393
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Liability	$ 24,552	$ 25,279