INTEREST-BEARING DEPOSITS AND SECURITIES (Available-for-sale Securities Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less, amortized cost	$ 25,195	$ 16,369
Due after one year thorugh five years, amortized cost	301,409	205,913
Due after five years through ten years, amortized cost	86,050	132,372
Due after ten years through twenty years, amortized cost	13,219	43,386
Due after twenty years, amortized cost	55,994	71,610
Amoritzed cost	481,867	469,650
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due one year or less, fair value	25,361	16,393
Due after one year through five years, fair value	298,978	207,147
Due after five years through ten years, fair value	84,906	133,407
due after ten years through twenty years, fair value	12,856	43,414
Due after twenty years, fair value	55,306	72,559
Fair Value	$ 477,407	$ 472,920