INTEREST-BEARING DEPOSITS AND SECURITIES (Trading Securities Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Trading Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less, amortized cost	$ 0	$ 1,000
Due after one year through five years, amortized cost	1,543	1,545
Due after five years through ten years, amortized cost	4,076	4,087
Due after ten years through twenty years, amortized cost	1,626	6,544
Due after twenty, amortized cost	57,394	58,549
Total with maturity date, amortized cost	64,639	71,725
Amortized Cost	92,017	112,663
Trading Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less, fair value	0	1,009
Due after one year through five years, fair value	1,614	1,626
Due after five years, through ten years, fair value	4,101	4,123
Due after ten years through twenty years, fair value	1,645	6,184
Due after twenty years, fair value	34,997	30,710
Total with maturity date, fair value	42,357	43,652
Fair Value	72,593	80,727
Total mortgage-backed or related securities [Member]
Trading Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Without maturity date, amortized cost	27,364	34,024
Amortized Cost	27,364	34,024
Trading Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Without maturity date, fair value	30,186	36,673
Fair Value	30,186	36,673
Equity securities [Member]
Trading Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Without maturity date, amortized cost	14	6,914
Amortized Cost	14	6,914
Trading Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Without maturity date, fair value	50	402
Fair Value	$ 50	$ 402