LOANS AND LEASES (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Summary of the carrying values of PCI loans
Non-covered loans and leases	$ 3,873,388	$ 3,049,505
Covered loans	510,924	543,327
Total gross loans and leases	4,384,312	3,592,832	3,651,181
Real estate mortgage
Summary of the carrying values of PCI loans
Non-covered loans and leases	2,494,108	1,917,670
Covered loans	477,273	504,900
Total gross loans and leases	2,971,381	2,422,570	1,950,777
Real estate construction
Summary of the carrying values of PCI loans
Non-covered loans and leases	181,993	129,959
Covered loans	19,531	24,645
Total gross loans and leases	201,524	154,604	152,748
Commercial
Summary of the carrying values of PCI loans
Non-covered loans and leases	918,669	787,775
Covered loans	10,765	13,184
Total gross loans and leases	929,434	800,959
Leases
Summary of the carrying values of PCI loans
Non-covered loans and leases	235,791	174,373
Total gross loans and leases	235,791	174,373
Consumer
Summary of the carrying values of PCI loans
Non-covered loans and leases	30,798	22,487
Covered loans	3,355	598
Total gross loans and leases	34,153	23,085
Foreign
Summary of the carrying values of PCI loans
Non-covered loans and leases	12,029	17,241
Total gross loans and leases	12,029	17,241
Non-PCI Loans and Leases
Summary of the carrying values of PCI loans
Non-covered loans and leases	3,854,129	3,049,505
Covered loans	97,426	25,442
Total gross loans and leases	3,951,555	3,074,947	3,080,068
Non-PCI Loans and Leases | Real estate mortgage
Summary of the carrying values of PCI loans
Non-covered loans and leases	2,476,180	1,917,670
Covered loans	75,601	20,843
Total gross loans and leases	2,551,781	1,938,513	1,950,777
Non-PCI Loans and Leases | Real estate construction
Summary of the carrying values of PCI loans
Non-covered loans and leases	180,697	129,959
Covered loans	9,260
Total gross loans and leases	189,957	129,959	152,748
Non-PCI Loans and Leases | Commercial
Summary of the carrying values of PCI loans
Non-covered loans and leases	918,669	787,775
Covered loans	9,500	4,113
Total gross loans and leases	928,169	791,888	777,365
Non-PCI Loans and Leases | Leases
Summary of the carrying values of PCI loans
Non-covered loans and leases	235,791	174,373
Total gross loans and leases	235,791	174,373	161,934
Non-PCI Loans and Leases | Consumer
Summary of the carrying values of PCI loans
Non-covered loans and leases	30,763	22,487
Covered loans	3,065	486
Total gross loans and leases	33,828	22,973	21,118
Non-PCI Loans and Leases | Foreign
Summary of the carrying values of PCI loans
Non-covered loans and leases	12,029	17,241
Total gross loans and leases	12,029	17,241	16,126
PCI Loans
Summary of the carrying values of PCI loans
Non-covered loans and leases	19,259
Covered loans	413,498	517,885
Total gross loans and leases	432,757	517,885	571,113
PCI Loans | Real estate mortgage
Summary of the carrying values of PCI loans
Non-covered loans and leases	17,928
Covered loans	401,672	484,057
Total gross loans and leases	419,600	484,057
PCI Loans | Real estate construction
Summary of the carrying values of PCI loans
Non-covered loans and leases	1,296
Covered loans	10,271	24,645
Total gross loans and leases	11,567	24,645
PCI Loans | Commercial
Summary of the carrying values of PCI loans
Covered loans	1,265	9,071
Total gross loans and leases	1,265	9,071
PCI Loans | Consumer
Summary of the carrying values of PCI loans
Non-covered loans and leases	35
Covered loans	290	112
Total gross loans and leases	$ 325	$ 112