LOANS AND LEASES (Details 12) (USD $) In Thousands, unless otherwise specified	0 Months Ended		12 Months Ended			0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended
	May 31, 2013 FCAL	May 31, 2013 FCAL Non-PCI Loans	Dec. 31, 2013 Covered loans PCI Loans	Dec. 31, 2012 Covered loans PCI Loans	Dec. 31, 2011 Covered loans PCI Loans	May 31, 2013 Covered loans FCAL	Dec. 31, 2013 Covered loans FCAL PCI Loans	Dec. 31, 2013 Non-Covered loans PCI Loans	May 31, 2013 Non-Covered loans FCAL	Dec. 31, 2013 Non-Covered loans FCAL PCI Loans
Changes in carrying amount
Balance at the beginning of the year			$ 491,816	$ 674,058	$ 879,486
Addition from the FCAL acquisition	(44,146)	1,000,000				(24,341)	24,341		(19,805)	19,805
Accretion			44,304	49,562	65,282			2,376
Payments received			(223,994)	(232,623)	(257,440)			(1,855)
Provision for credit losses			4,210	819	(13,270)
Balance at the end of the year			340,677	491,816	674,058			20,326
Changes in accretable yield
Balance at the beginning of the year			(196,022)	(259,265)	(290,665)
Addition from the FCAL acquisition	8,096					2,424	(2,424)		5,672	(5,672)
Accretion			44,304	49,562	65,282			2,376
Decrease (increase) in expected cash flows, net			20,494	13,681	(33,882)			(2,624)
Balance at the end of the year			$ (133,648)	$ (196,022)	$ (259,265)			$ (5,920)