FDIC LOSS SHARING ASSET (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Changes in the FDIC loss sharing asset
Balance, at the beginning of the period	$ 57,475	$ 95,187
Addition from the FCAL acquisition	17,241
FDIC share of additional losses, net of recoveries	4,969	6,169
Cash received from FDIC	(7,332)	(33,223)
Net amortization	(26,829)	(10,658)
Balance, at the end of the period	45,524	57,475
FDIC loss sharing asset
FDIC loss sharing asset	45,524	57,475
True-up liability	6,647
Non-single family covered assets	394,055
Single family covered assets	126,561
Affinity
Changes in the FDIC loss sharing asset
Balance, at the end of the period	9,732
FDIC loss sharing asset
FDIC loss sharing asset	9,732
Non-single family covered assets	199,686
Single family covered assets	14,197
Los Padres Bank
Changes in the FDIC loss sharing asset
Balance, at the end of the period	22,962
FDIC loss sharing asset
FDIC loss sharing asset	22,962
Non-single family covered assets	133,201
Single family covered assets	74,367
Western Commercial Bank
Changes in the FDIC loss sharing asset
Balance, at the end of the period	1,709
FDIC loss sharing asset
FDIC loss sharing asset	1,709
True-up liability	1,522
Non-single family covered assets	16,309
San Luis Trust Bank
Changes in the FDIC loss sharing asset
Balance, at the end of the period	11,121
FDIC loss sharing asset
FDIC loss sharing asset	11,121
True-up liability	5,125
Non-single family covered assets	44,859
Single family covered assets	$ 37,997