GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2013 APB	Dec. 31, 2012 APB	Aug. 01, 2012 APB	Dec. 31, 2012 EQF	Jan. 03, 2012 EQF	Dec. 31, 2012 Celtic	Apr. 03, 2012 Celtic	Dec. 31, 2013 FCAL
Changes in the carrying amount of goodwill
Balance, at the beginning of the period	$ 79,866	$ 47,301			$ 15,047		$ 19,033		$ 6,645
Tax deductible addition from acquisition						19,033
Non-tax deductible addition from the FCAL acquisition				15,047				6,645		129,070
Adjustments to Los Padres goodwill, including resolution of matter with FDIC regarding settlement accounting for wholly-owned subsidiary of Los Padres		(8,160)
Adjustment to APB goodwill			(193)
Balance, at the end of the period	$ 208,743	$ 39,141			$ 15,047		$ 19,033		$ 6,645
Remaining weighted average amortization period	2 years 7 months 6 days									3 years 3 months 18 days