FAIR VALUE (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Carrying Amount [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Federal Reserve Bank, Federal Home Loan Bank and other stock	$ 3,043		$ 3,043
Carrying Amount [Member] | Level 1 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Cash and due from banks	302,529		384,656
Carrying Amount [Member] | Level 2 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Cash equivalents	1,150		1,150
Investment securities held to maturity	7,871		8,035
Investment securities available for sale	413,277		402,353
Accrued interest and loan fees receivable	5,746		4,883
Non maturity deposits	1,153,942		1,187,383
Time deposits	249,816		243,731
Accrued interest payable	235		237
Carrying Amount [Member] | Level 3 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Loans held-for-Sale	2,494		907
Carrying Amount [Member] | Level 2/3 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Loans, net of allowance	806,565	[1]	762,999	[1]
Estimated Fair Value [Member] | Level 1 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Cash and due from banks	302,529		384,656
Estimated Fair Value [Member] | Level 2 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Cash equivalents	1,150		1,150
Investment securities held to maturity	8,662		8,861
Investment securities available for sale	413,277		402,353
Accrued interest and loan fees receivable	5,746		4,883
Non maturity deposits	1,153,942		1,187,383
Time deposits	251,423		245,595
Accrued interest payable	235		237
Estimated Fair Value [Member] | Level 3 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Loans held-for-Sale	2,494		907
Estimated Fair Value [Member] | Level 2/3 [Member]
Carrying amounts and estimated fair values of financial instruments [Abstract]
Loans, net of allowance	$ 826,342	[1]	$ 787,597	[1]

[1] Impaired loans are generally classified within Level 3 of the fair value hierarchy.