LOANS (covered) - Carrying Amount of Accretable Yield for Purchased Impaired and Nonimpaired Loans (Details) (Covered Loans, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Covered Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 127,764	$ 173,920	$ 133,671	$ 224,694
Reclassification from/(to) non-accretable difference	(2,295)	(4,979)	19,864	(5,687)
Accretion	(8,158)	(13,772)	(26,808)	(46,971)
Other net activity	(4,250)	(8,347)	(13,666)	(25,214)
Balance at end of period	$ 113,061	$ 146,822	$ 113,061	$ 146,822