FAIR VALUE ACCOUNTING AND MEASUREMENT (Assets and Liabilities Measured at Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	$ 459,958	$ 465,795
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Total assets	0	0
Advances from FHLB at faur valus	0	0
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	0	0
Total liabilities	0	0
Recurring [Member] | Level 1 [Member] | Interest rate lock commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 1 [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 1 [Member] | U.S. Government and agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Recurring [Member] | Level 1 [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Recurring [Member] | Level 1 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	0	0
Recurring [Member] | Level 1 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Recurring [Member] | Level 1 [Member] | Equity securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	0	0
Recurring [Member] | Level 1 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	459,958	465,795
Securities - trading	37,413	50,272
Total assets	507,460	522,351
Advances from FHLB at faur valus	10,367	10,533
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	0	0
Total liabilities	20,282	16,816
Recurring [Member] | Level 2 [Member] | Interest rate lock commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,255	617
Derivative liabilities	1,081	617
Recurring [Member] | Level 2 [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	8,834	5,667
Derivative liabilities	8,834	5,666
Recurring [Member] | Level 2 [Member] | U.S. Government and agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	158,242	338,971
Securities - trading	1,642	2,635
Recurring [Member] | Level 2 [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	40,003	6,260
Securities - trading	5,535	5,962
Recurring [Member] | Level 2 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	4,075	27,310
Recurring [Member] | Level 2 [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	0	4,600
Recurring [Member] | Level 2 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	224,886	93,254
Securities - trading	30,186	36,673
Recurring [Member] | Level 2 [Member] | Equity securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	50	402
Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	32,752	0
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	35,180	30,455
Total assets	35,180	30,455
Advances from FHLB at faur valus	0	0
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	73,071	49,988
Total liabilities	73,071	49,988
Recurring [Member] | Level 3 [Member] | Interest rate lock commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 3 [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 3 [Member] | U.S. Government and agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Recurring [Member] | Level 3 [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Recurring [Member] | Level 3 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Recurring [Member] | Level 3 [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	35,180	30,455
Recurring [Member] | Level 3 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Securities - trading	0	0
Recurring [Member] | Level 3 [Member] | Equity securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	0	0
Recurring [Member] | Level 3 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	0	0
Recurring [Member] | Total [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	459,958	465,795
Securities - trading	72,593	80,727
Total assets	542,640	552,806
Advances from FHLB at faur valus	10,367	10,533
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	73,071	49,988
Total liabilities	93,353	66,804
Recurring [Member] | Total [Member] | Interest rate lock commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,255	617
Derivative liabilities	1,081	617
Recurring [Member] | Total [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	8,834	5,667
Derivative liabilities	8,834	5,666
Recurring [Member] | Total [Member] | U.S. Government and agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	158,242	338,971
Securities - trading	1,642	2,635
Recurring [Member] | Total [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	40,003	6,260
Securities - trading	5,535	5,962
Recurring [Member] | Total [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	4,075	27,310
Recurring [Member] | Total [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	35,180	35,055
Recurring [Member] | Total [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	224,886	93,254
Securities - trading	30,186	36,673
Recurring [Member] | Total [Member] | Equity securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - trading	50	402
Recurring [Member] | Total [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities - available-for-sale	$ 32,752	$ 0