Quarterly report pursuant to Section 13 or 15(d)

Loans - Allowance for Loan Losses by Portfolio Segment (Detail)

v3.2.0.727
Loans - Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Allowance for loan losses:        
Balance at beginning of period     $ 52,666  
Balance at end of period $ 50,820   50,820  
Loans receivable:        
Balance at end of period 2,874,172   2,874,172  
Real estate loans [Member]        
Loans receivable:        
Balance at end of period 2,586,666   2,586,666  
Commercial and industrial loans [Member]        
Loans receivable:        
Balance at end of period 261,189   261,189  
Consumer loans [Member]        
Loans receivable:        
Balance at end of period 26,317   26,317  
PCI Loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 1,436   1,026  
Charge-offs 52      
Recoveries on loans previously charged off (352)      
Provision (negative provision) 216   326  
Balance at end of period 1,352   1,352  
Loans receivable:        
Balance at end of period 33,908   33,908  
PCI Loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: acquired with deteriorated credit quality 33,908   33,908  
PCI Loans [Member] | Real estate loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 1,318   895  
Charge-offs 52      
Recoveries on loans previously charged off 0      
Provision (negative provision) (81)   394  
Balance at end of period 1,289   1,289  
Loans receivable:        
Balance at end of period 33,598   33,598  
PCI Loans [Member] | Real estate loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: acquired with deteriorated credit quality 33,598   33,598  
PCI Loans [Member] | Commercial and industrial loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 118   131  
Charge-offs 0      
Recoveries on loans previously charged off (352)      
Provision (negative provision) 297   (68)  
Balance at end of period 63   63  
Loans receivable:        
Balance at end of period 267   267  
PCI Loans [Member] | Commercial and industrial loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: acquired with deteriorated credit quality 267   267  
PCI Loans [Member] | Consumer loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 0   0  
Charge-offs 0      
Recoveries on loans previously charged off 0      
Provision (negative provision) 0   0  
Balance at end of period 0   0  
Loans receivable:        
Balance at end of period 43   43  
PCI Loans [Member] | Consumer loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: acquired with deteriorated credit quality 43   43  
PCI Loans [Member] | Unallocated [Member]        
Allowance for loan losses:        
Balance at beginning of period 0   0  
Charge-offs 0      
Recoveries on loans previously charged off 0      
Provision (negative provision) 0   0  
Balance at end of period 0   0  
PCI Loans [Member] | Unallocated [Member] | Loans [Member]        
Loans receivable:        
Ending balance: acquired with deteriorated credit quality 0   0  
Non-PCI Loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 51,515 $ 56,593 51,640 $ 57,555
Charge-offs (1,221) (2,547) (1,255) (4,151)
Recoveries on loans previously charged off 1,793 1,741 3,485 5,992
Provision (negative provision) (2,619) (3,901) (4,402) (7,510)
Balance at end of period 49,468 51,886 49,468 51,886
Loans receivable:        
Balance at end of period 2,840,264 2,349,235 2,840,264 2,349,235
Non-PCI Loans [Member] | Allowance for Loans and Leases Receivable [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 5,301 5,166 5,301 5,166
Ending balance: collectively evaluated for impairment 44,167 46,720 44,167 46,720
Non-PCI Loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 45,003 47,886 45,003 47,886
Ending balance: collectively evaluated for impairment 2,795,261 2,301,349 2,795,261 2,301,349
Non-PCI Loans [Member] | Real estate loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 42,550 44,230 41,194 43,550
Charge-offs (101) (60) (101) (1,188)
Recoveries on loans previously charged off 1,263 87 1,295 3,005
Provision (negative provision) (3,814) (3,954) (2,490) (5,064)
Balance at end of period 39,898 40,303 39,898 40,303
Loans receivable:        
Balance at end of period 2,553,068 2,090,083 2,553,068 2,090,083
Non-PCI Loans [Member] | Real estate loans [Member] | Allowance for Loans and Leases Receivable [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 3,798 2,448 3,798 2,448
Ending balance: collectively evaluated for impairment 36,100 37,855 36,100 37,855
Non-PCI Loans [Member] | Real estate loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 32,795 35,616 32,795 35,616
Ending balance: collectively evaluated for impairment 2,520,273 2,054,467 2,520,273 2,054,467
Non-PCI Loans [Member] | Commercial and industrial loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 7,786 10,425 9,142 11,287
Charge-offs (1,120) (2,474) (1,154) (2,896)
Recoveries on loans previously charged off 530 1,652 2,190 2,973
Provision (negative provision) 1,049 135 (1,933) (1,626)
Balance at end of period 8,245 9,738 8,245 9,738
Loans receivable:        
Balance at end of period 260,922 230,309 260,922 230,309
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Allowance for Loans and Leases Receivable [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 1,503 2,605 1,503 2,605
Ending balance: collectively evaluated for impairment 6,742 7,133 6,742 7,133
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 10,401 10,741 10,401 10,741
Ending balance: collectively evaluated for impairment 250,521 219,568 250,521 219,568
Non-PCI Loans [Member] | Consumer loans [Member]        
Allowance for loan losses:        
Balance at beginning of period 185 633 220 1,427
Charge-offs 0 (13) 0 (67)
Recoveries on loans previously charged off 0 2 0 14
Provision (negative provision) (13) (82) (48) (834)
Balance at end of period 172 540 172 540
Loans receivable:        
Balance at end of period 26,274 28,843 26,274 28,843
Non-PCI Loans [Member] | Consumer loans [Member] | Allowance for Loans and Leases Receivable [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 0 113 0 113
Ending balance: collectively evaluated for impairment 172 427 172 427
Non-PCI Loans [Member] | Consumer loans [Member] | Loans [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 1,807 1,529 1,807 1,529
Ending balance: collectively evaluated for impairment 24,467 27,314 24,467 27,314
Non-PCI Loans [Member] | Unallocated [Member]        
Allowance for loan losses:        
Balance at beginning of period 994 1,305 1,084 1,291
Charge-offs 0 0 0 0
Recoveries on loans previously charged off 0 0 0 0
Provision (negative provision) 159 0 69 14
Balance at end of period 1,153 1,305 1,153 1,305
Loans receivable:        
Balance at end of period 0 0 0 0
Ending balance: collectively evaluated for impairment 0   0  
Non-PCI Loans [Member] | Unallocated [Member] | Allowance for Loans and Leases Receivable [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 0 0 0 0
Ending balance: collectively evaluated for impairment 1,153 1,305 1,153 1,305
Non-PCI Loans [Member] | Unallocated [Member] | Loans [Member]        
Loans receivable:        
Ending balance: individually evaluated for impairment 0 0 0 0
Ending balance: collectively evaluated for impairment $ 0 $ 0 $ 0 $ 0