FAIR VALUE (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Non-covered impaired loans
Non-covered OREO	$ 32,900,000
Covered OREO	26,800,000
FDIC percentage of reimbursement under shared loss agreements	80.00%
Percentage of company's liability for losses under shared loss agreements	20.00%		20.00%
Company's liability for losses under shared loss agreements	11,200,000		5,300,000
Total eligible losses subject to shared loss agreements	26,300,000		2,200,000
Fair Value, Measurements, Nonrecurring | Fair Value Measurements
Non-covered impaired loans
Total residential	23,043,000		16,626,000
Total commercial real estate	31,737,000		45,679,000
Total commercial and industrial	12,838,000		12,516,000
Total consumer	372,000
Total non-covered impaired loans	67,990,000		74,821,000
Non-covered OREO	2,065,000		8,491,000
Covered OREO	10,468,000	[1]	35,926,000	[1]
Loans Held for Sale			14,527,000
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Non-covered impaired loans
Total residential	23,043,000		16,626,000
Total commercial real estate	31,737,000		45,679,000
Total commercial and industrial	3,150,000
Total consumer	372,000
Total non-covered impaired loans	58,302,000		62,305,000
Non-covered OREO	2,065,000		8,491,000
Covered OREO	10,468,000	[1]	35,926,000	[1]
Loans Held for Sale			14,527,000
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Non-covered impaired loans
Total commercial and industrial	9,688,000		12,516,000
Total non-covered impaired loans	9,688,000		12,516,000
Fair Value, Measurements, Nonrecurring | Total Gains (Losses)
Non-covered impaired loans
Total residential	(4,803,000)		(7,380,000)
Total commercial real estate	(8,405,000)		(39,839,000)
Total commercial and industrial	(14,540,000)		(14,330,000)
Total consumer	(264,000)
Total non-covered impaired loans	(28,012,000)		(61,549,000)
Non-covered OREO	(5,122,000)		(3,015,000)
Covered OREO	(11,183,000)	[1]	(26,251,000)	[1]
Loans Held for Sale	$ (4,730,000)		$ (12,867,000)

[1] Covered OREO results from the WFIB and UCB FDIC-assisted acquisitions for which the Company entered into shared-loss agreements with the FDIC whereby the FDIC will reimburse the Company for 80% of eligible losses. As such, the Company's liability for losses is 20% of the $11.2 million in losses, or $2.2 million, and 20% of the $26.3 million in losses, or $5.3 million, for the year ended December 31, 2012 and 2011, respectively.