Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Loans - Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Allowance for loan losses:          
Balance at beginning of period     $ 42,935    
(Negative provision) provision $ (1,450) $ (3,704) (4,490) $ (7,779)  
Balance at end of period 38,972   38,972    
Loans receivable:          
Total Loans 3,552,659   3,552,659   $ 3,183,316
Non-PCI Loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 34,259 49,468 37,494 51,640  
Charge-offs (111) (1,748) (1,410) (3,004)  
Recoveries on loans previously charged off 831 992 2,079 4,477  
(Negative provision) provision (1,540) (5,490) (4,724) (9,891)  
Balance at end of period 33,439 43,222 33,439 43,222  
Ending balance: individually evaluated for impairment 3,218 4,346 3,218 4,346  
Ending balance: collectively evaluated for impairment 30,221 38,876 30,221 38,876  
Loans receivable:          
Total Loans 3,537,119 3,019,927 3,537,119 3,019,927 3,163,302
Ending balance: individually evaluated for impairment 23,907 37,912 23,907 37,912  
Ending balance: collectively evaluated for impairment 3,513,212 2,982,015 3,513,212 2,982,015  
Non-PCI Loans [Member] | Real estate loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 28,116 39,898 29,800 41,194  
Charge-offs (18) (334) (709) (435)  
Recoveries on loans previously charged off 337 745 527 2,040  
(Negative provision) provision (479) (5,867) (1,662) (8,357)  
Balance at end of period 27,956 34,442 27,956 34,442  
Ending balance: individually evaluated for impairment 2,723 3,500 2,723 3,500  
Ending balance: collectively evaluated for impairment 25,233 30,942 25,233 30,942  
Loans receivable:          
Total Loans 3,195,332 2,714,645 3,195,332 2,714,645  
Ending balance: individually evaluated for impairment 18,522 28,372 18,522 28,372  
Ending balance: collectively evaluated for impairment 3,176,810 2,686,273 3,176,810 2,686,273  
Non-PCI Loans [Member] | Commercial and industrial loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 5,502 8,245 7,081 9,142  
Charge-offs (93) (1,414) (701) (2,569)  
Recoveries on loans previously charged off 494 244 1,499 2,434  
(Negative provision) provision (622) 700 (2,598) (1,232)  
Balance at end of period 5,281 7,775 5,281 7,775  
Ending balance: individually evaluated for impairment 495 846 495 846  
Ending balance: collectively evaluated for impairment 4,786 6,929 4,786 6,929  
Loans receivable:          
Total Loans 319,521 280,591 319,521 280,591  
Ending balance: individually evaluated for impairment 4,705 7,851 4,705 7,851  
Ending balance: collectively evaluated for impairment 314,816 272,740 314,816 272,740  
Non-PCI Loans [Member] | Consumer loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 242 172 242 220  
Charge-offs 0 0 0 0  
Recoveries on loans previously charged off 0 3 53 3  
(Negative provision) provision (40) (78) (93) (126)  
Balance at end of period 202 97 202 97  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 202 97 202 97  
Loans receivable:          
Total Loans 22,266 24,691 22,266 24,691  
Ending balance: individually evaluated for impairment 680 1,689 680 1,689  
Ending balance: collectively evaluated for impairment 21,586 23,002 21,586 23,002  
Non-PCI Loans [Member] | Unallocated [Member]          
Allowance for loan losses:          
Balance at beginning of period 399 1,153 371 1,084  
Charge-offs 0 0 0 0  
Recoveries on loans previously charged off 0 0 0 0  
(Negative provision) provision (399) (245) (371) (176)  
Balance at end of period 0 908 0 908  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 0 908 0 908  
Loans receivable:          
Total Loans 0 0 0 0  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 0 0 0 0  
PCI Loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 5,448 1,352 5,441 1,026  
Charge-offs (5)   (142)    
(Negative provision) provision 90 1,786 234 2,112  
Balance at end of period 5,533 3,138 5,533 3,138  
Loans receivable:          
Total Loans 15,540 25,145 15,540 25,145 $ 20,014
PCI Loans [Member] | Real estate loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 5,400 1,289 5,397 895  
Charge-offs (5)   (142)    
(Negative provision) provision 89 1,830 229 2,224  
Balance at end of period 5,484 3,119 5,484 3,119  
Loans receivable:          
Total Loans 15,355 24,909 15,355 24,909  
PCI Loans [Member] | Commercial and industrial loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 41 63 42 131  
Charge-offs 0   0    
(Negative provision) provision 1 (46) 0 (114)  
Balance at end of period 42 17 42 17  
Loans receivable:          
Total Loans 135 193 135 193  
PCI Loans [Member] | Consumer loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 7 0 2 0  
Charge-offs 0   0    
(Negative provision) provision 0 2 5 2  
Balance at end of period 7 2 7 2  
Loans receivable:          
Total Loans 50 43 50 43  
PCI Loans [Member] | Unallocated [Member]          
Allowance for loan losses:          
Balance at beginning of period 0 0 0 0  
Charge-offs 0   0    
(Negative provision) provision 0 0 0 0  
Balance at end of period 0 0 0 0  
Loans receivable:          
Total Loans $ 0 $ 0 $ 0 $ 0