LOANS AND LEASES (Details 12) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	$ 4,420,619	$ 3,592,832	$ 3,487,301
Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	3,032,602	2,422,570	1,850,162
Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	213,735	154,604	129,107
Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	913,069	800,959	707,566
Consumer
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	29,051	23,085	17,689
PCI Loans
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	494,389	517,885	611,967
PCI Loans | Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	474,412	484,057
PCI Loans | Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	15,959	24,645
PCI Loans | Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	3,560	9,071
PCI Loans | Consumer
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	458	112
Nonclassified | PCI Loans
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	294,201	341,072
Nonclassified | PCI Loans | Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	288,344	331,341
Nonclassified | PCI Loans | Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	4,938	6,311
Nonclassified | PCI Loans | Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	919	3,420
Classified | PCI Loans
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	200,188	176,813
Classified | PCI Loans | Real estate mortgage
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	186,068	152,716
Classified | PCI Loans | Real estate construction
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	11,021	18,334
Classified | PCI Loans | Commercial
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	2,641	5,651
Classified | PCI Loans | Consumer
Credit risk rating categories for PCI loans by portfolio segment
Total PCI Loans	$ 458	$ 112