INCOME TAXES (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Federal	Dec. 31, 2012 State	Dec. 31, 2011 State	Dec. 31, 2007 State
Operating loss carryforwards
Net operating loss carryforwards				$ 3,000,000	$ 3,000,000	$ 312,300,000
Net operating loss from the acquisition of Desert Community Bank (DCB) in 2007							3,000,000
Previous California suspended net operating losses to be utilized in the 2012 state tax return.	304,400,000
Activity related to unrecognized tax benefits
Balance, beginning of year	3,332,000	4,952,000
Additions for tax positions of prior years		794,000
Reductions for tax positions of prior years		(3,208,000)
Additions for tax positions of current year	1,060,000	794,000
Settlements	(935,000)
Balance, end of year	3,457,000	3,332,000
Increase in unrecognized tax benefits reserve for the California enterprise zone net interest deduction	1,100,000	1,600,000
Franchise Tax Board tax paid related to the resolution of the enterprise zone net interest deduction	935,000
Reduction in unrecognized tax benefits reserve for California enterprise zone, net interest deduction		3,200,000
ASC 740-10 liability	6,100,000	4,800,000
Total amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate	2,200,000	2,200,000
Accrued interest and penalties expense for unrecognized tax positions	1,200,000	287,000	796,000
Total interest and penalties accrued	$ 2,700,000	$ 1,500,000