|
Loans - Credit Quality of Loan Portfolio (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
Real estate loans [Member]
|
Sep. 30, 2013
Real estate loans [Member]
|
Sep. 30, 2014
Real estate loans [Member]
Retail [Member]
|
Sep. 30, 2014
Real estate loans [Member]
Hotel/Motel [Member]
|
Sep. 30, 2014
Real estate loans [Member]
Gas station [Member]
|
Sep. 30, 2014
Real estate loans [Member]
Other [Member]
|
Sep. 30, 2014
Real estate loans [Member]
Construction [Member]
|
Sep. 30, 2014
Real estate loans [Member]
Residential property [Member]
|
Sep. 30, 2014
Commercial and industrial loans [Member]
|
Sep. 30, 2013
Commercial and industrial loans [Member]
|
Sep. 30, 2014
Commercial and industrial loans [Member]
Commercial term [Member]
|
Sep. 30, 2014
Commercial and industrial loans [Member]
Commercial lines of credit [Member]
|
Sep. 30, 2014
Commercial and industrial loans [Member]
International loans [Member]
|
Sep. 30, 2014
Consumer loans [Member]
|
Sep. 30, 2013
Consumer loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Criticized (Grade 5) [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Criticized (Grade 5) [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Classified (Grade 6-7) [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Classified (Grade 6-7) [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Retail [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Retail [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Hotel/Motel [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Hotel/Motel [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Gas station [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Gas station [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Other [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Other [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Construction [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Residential property [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Residential property [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Retail [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Retail [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Hotel/Motel [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Hotel/Motel [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Gas station [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Gas station [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Other [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Other [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Construction [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Residential property [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Residential property [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Retail [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Retail [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Hotel/Motel [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Hotel/Motel [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Gas station [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Gas station [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Other [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Other [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Criticized (Grade 5) [Member]
Residential property [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Retail [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Retail [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Hotel/Motel [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Hotel/Motel [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Gas station [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Gas station [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Other [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Other [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Residential property [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Real estate loans [Member]
Classified (Grade 6-7) [Member]
Residential property [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Commercial term [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Commercial term [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Commercial lines of credit [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Commercial lines of credit [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
International loans [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
International loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Commercial term [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Commercial term [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Commercial lines of credit [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
Commercial lines of credit [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
International loans [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
International loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Criticized (Grade 5) [Member]
Commercial term [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Criticized (Grade 5) [Member]
Commercial term [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Criticized (Grade 5) [Member]
International loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Classified (Grade 6-7) [Member]
Commercial term [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Classified (Grade 6-7) [Member]
Commercial term [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Classified (Grade 6-7) [Member]
Commercial lines of credit [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Classified (Grade 6-7) [Member]
Commercial lines of credit [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Commercial and industrial loans [Member]
Classified (Grade 6-7) [Member]
International loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Consumer loans [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Consumer loans [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Consumer loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Consumer loans [Member]
Pass/Pass-Watch (Grade 0-4) [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Consumer loans [Member]
Criticized (Grade 5) [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Consumer loans [Member]
Criticized (Grade 5) [Member]
|
Sep. 30, 2014
Non-PCI Loans [Member]
Consumer loans [Member]
Classified (Grade 6-7) [Member]
|
Dec. 31, 2013
Non-PCI Loans [Member]
Consumer loans [Member]
Classified (Grade 6-7) [Member]
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Financing Receivable, Recorded Investment [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Total Non-PCI loans | $ 2,675,959 | $ 2,159,271 | $ 2,411,154 | $ 1,921,659 | $ 651,801 | $ 466,611 | $ 358,455 | $ 821,411 | $ 4,146 | $ 108,730 | $ 235,898 | $ 203,547 | $ 119,525 | $ 75,246 | $ 41,127 | $ 28,907 | $ 34,065 | $ 2,608,935 | $ 2,234,089 | $ 2,476,872 | $ 2,130,392 | $ 87,046 | $ 21,479 | $ 45,017 | $ 82,218 | $ 2,344,538 | $ 1,969,798 | $ 635,861 | $ 543,619 | $ 452,405 | $ 322,927 | $ 340,386 | $ 292,557 | $ 805,696 | $ 731,617 | $ 4,146 | $ 106,044 | $ 79,078 | $ 620,511 | $ 531,014 | $ 399,006 | $ 308,483 | $ 320,501 | $ 279,636 | $ 780,400 | $ 690,481 | $ 4,146 | $ 103,812 | $ 77,422 | $ 12,821 | $ 5,309 | $ 48,995 | $ 1,796 | $ 10,054 | $ 3,104 | $ 13,599 | $ 8,524 | $ 122 | $ 2,529 | $ 7,296 | $ 4,404 | $ 12,648 | $ 9,831 | $ 9,817 | $ 11,697 | $ 32,612 | $ 2,110 | $ 1,656 | $ 235,548 | $ 231,786 | $ 119,175 | $ 124,391 | $ 75,246 | $ 71,042 | $ 41,127 | $ 36,353 | $ 108,908 | $ 107,712 | $ 74,286 | $ 69,823 | $ 38,676 | $ 35,777 | $ 1,315 | $ 2,007 | $ 576 | $ 8,952 | $ 14,672 | $ 960 | $ 1,219 | $ 2,451 | $ 28,849 | $ 32,505 | $ 26,626 | $ 30,044 | $ 140 | $ 163 | $ 2,083 | $ 2,298 |