INTEREST-BEARING DEPOSITS AND SECURITIES (Available-for-sale Securities Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less, amortized cost	$ 17,266	$ 19,520
Due after one year thorugh five years, amortized cost	157,169	312,862
Due after five years through ten years, amortized cost	37,693	38,916
Due after ten years through twenty years, amortized cost	21,678	0
Due after twenty years, amortized cost	0	0
With maturity date, amortized cost	233,806	371,298
Mortgage-backed securities, amortized cost	222,422	91,281
Amoritzed cost	456,228	462,579
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due one year or less, fair value	17,301	19,602
Due after one year through five years, fair value	158,130	313,930
Due after five years through ten years, fair value	37,776	39,009
due after ten years through twenty years, fair value	21,865	0
Due after twenty years, fair value	0	0
With maturity date, fair value	235,072	372,541
Mortgage-backed securities, fair value	224,886	93,254
Fair Value	$ 459,958	$ 465,795