LOANS AND LEASES (Details 12) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	$ 4,384,312	$ 3,592,832	$ 3,651,181
Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	2,971,381	2,422,570	1,950,777
Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	201,524	154,604	152,748
Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	929,434	800,959
Consumer
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	34,153	23,085
PCI Loans
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	432,757	517,885	571,113
PCI Loans | Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	419,600	484,057
PCI Loans | Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	11,567	24,645
PCI Loans | Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	1,265	9,071
PCI Loans | Consumer
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	325	112
Nonclassified | PCI Loans
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	251,663	341,072
Nonclassified | PCI Loans | Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	246,718	331,341
Nonclassified | PCI Loans | Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	4,303	6,311
Nonclassified | PCI Loans | Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	642	3,420
Classified | PCI Loans
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	181,094	176,813
Classified | PCI Loans | Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	172,882	152,716
Classified | PCI Loans | Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	7,264	18,334
Classified | PCI Loans | Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	623	5,651
Classified | PCI Loans | Consumer
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	$ 325	$ 112