Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Loans and Leases - Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Allowance for loan losses:          
Balance at beginning of period     $ 32,429    
Loan and lease loss provision (income) $ 422 $ (1,515) 342 $ (3,040)  
Balance at end of period 33,758   33,758    
Loans receivable:          
Total Loans and leases receivable 4,073,062   4,073,062   $ 3,844,769
Non-PCI Loans and Leases [Member]          
Allowance for loan losses:          
Balance at beginning of period 32,261 35,381 31,458 37,494  
Charge-offs (665) (662) (851) (1,299)  
Recoveries on loans and leases previously charged off 849 995 1,838 1,248  
Loan and lease loss provision (income) 593 (1,455) 593 (3,184)  
Balance at end of period 33,038 34,259 33,038 34,259  
Ending balance: individually evaluated for impairment 5,479 3,011 5,479 3,011  
Ending balance: collectively evaluated for impairment 27,559 31,248 27,559 31,248  
Loans receivable:          
Total Loans and leases receivable 4,064,278 3,434,290 4,064,278 3,434,290 3,834,906
Ending balance: individually evaluated for impairment 26,194 26,187 26,194 26,187  
Ending balance: collectively evaluated for impairment 4,038,084 3,408,103 4,038,084 3,408,103  
Non-PCI Loans and Leases [Member] | Real estate loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 24,760 28,278 25,212 29,800  
Charge-offs (38) (156) (142) (691)  
Recoveries on loans and leases previously charged off 447 97 1,159 190  
Loan and lease loss provision (income) (2,407) (103) (3,467) (1,183)  
Balance at end of period 22,762 28,116 22,762 28,116  
Ending balance: individually evaluated for impairment 3,638 2,589 3,638 2,589  
Ending balance: collectively evaluated for impairment 19,124 25,527 19,124 25,527  
Loans receivable:          
Total Loans and leases receivable 3,442,340 3,116,749 3,442,340 3,116,749  
Ending balance: individually evaluated for impairment 19,695 20,412 19,695 20,412  
Ending balance: collectively evaluated for impairment 3,422,645 3,096,337 3,422,645 3,096,337  
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 5,914 6,289 5,582 7,081  
Charge-offs 0 (506) (40) (608)  
Recoveries on loans and leases previously charged off 367 845 644 1,005  
Loan and lease loss provision (income) 698 (1,126) 793 (1,976)  
Balance at end of period 6,979 5,502 6,979 5,502  
Ending balance: individually evaluated for impairment 1,841 422 1,841 422  
Ending balance: collectively evaluated for impairment 5,138 5,080 5,138 5,080  
Loans receivable:          
Total Loans and leases receivable 347,181 292,927 347,181 292,927  
Ending balance: individually evaluated for impairment 5,275 5,089 5,275 5,089  
Ending balance: collectively evaluated for impairment 341,906 287,838 341,906 287,838  
Non-PCI Loans and Leases [Member] | Leases Receivable [Member]          
Allowance for loan losses:          
Balance at beginning of period 980 0 307 0  
Charge-offs (627) 0 (669) 0  
Recoveries on loans and leases previously charged off 20 0 20 0  
Loan and lease loss provision (income) 1,660 0 2,375 0  
Balance at end of period 2,033 0 2,033 0  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 2,033 0 2,033 0  
Loans receivable:          
Total Loans and leases receivable 257,525 0 257,525 0  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 257,525 0 257,525 0  
Non-PCI Loans and Leases [Member] | Consumer loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 122 255 191 242  
Charge-offs 0 0 0 0  
Recoveries on loans and leases previously charged off 15 53 15 53  
Loan and lease loss provision (income) (50) (66) (119) (53)  
Balance at end of period 87 242 87 242  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 87 242 87 242  
Loans receivable:          
Total Loans and leases receivable 17,232 24,614 17,232 24,614  
Ending balance: individually evaluated for impairment 1,224 686 1,224 686  
Ending balance: collectively evaluated for impairment 16,008 23,928 16,008 23,928  
Non-PCI Loans and Leases [Member] | Unallocated [Member]          
Allowance for loan losses:          
Balance at beginning of period 485 559 166 371  
Charge-offs 0 0 0 0  
Recoveries on loans and leases previously charged off 0 0 0 0  
Loan and lease loss provision (income) 692 (160) 1,011 28  
Balance at end of period 1,177 399 1,177 399  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 1,177 399 1,177 399  
Loans receivable:          
Total Loans and leases receivable 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 and Leases [Member]          
Allowance for loan losses:          
Balance at beginning of period 891 5,645 971 5,441  
Charge-offs 0 (137) 0 (137)  
Loan and lease loss provision (income) (171) (60) (251) 144  
Balance at end of period 720 5,448 720 5,448  
Loans receivable:          
Total Loans and leases receivable 8,784 15,020 8,784 15,020 $ 9,863
PCI Loans and Leases [Member] | Real estate loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 842 5,599 922 5,397  
Charge-offs 0 (137) 0 (137)  
Loan and lease loss provision (income) (171) (62) (251) 140  
Balance at end of period 671 5,400 671 5,400  
Loans receivable:          
Total Loans and leases receivable 8,685 14,823 8,685 14,823  
PCI Loans and Leases [Member] | Commercial and industrial loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 41 44 41 42  
Charge-offs 0 0 0 0  
Loan and lease loss provision (income) 0 (3) 0 (1)  
Balance at end of period 41 41 41 41  
Loans receivable:          
Total Loans and leases receivable 55 146 55 146  
PCI Loans and Leases [Member] | Leases Receivable [Member]          
Allowance for loan losses:          
Balance at beginning of period 0 0 0 0  
Charge-offs 0 0 0 0  
Loan and lease loss provision (income) 0 0 0 0  
Balance at end of period 0 0 0 0  
Loans receivable:          
Total Loans and leases receivable 0 0 0 0  
PCI Loans and Leases [Member] | Consumer loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 8 2 8 2  
Charge-offs 0 0 0 0  
Loan and lease loss provision (income) 0 5 0 5  
Balance at end of period 8 7 8 7  
Loans receivable:          
Total Loans and leases receivable 44 51 44 51  
PCI Loans and Leases [Member] | Unallocated [Member]          
Allowance for loan losses:          
Balance at beginning of period 0 0 0 0  
Charge-offs 0 0 0 0  
Loan and lease loss provision (income) 0 0 0 0  
Balance at end of period 0 0 0 0  
Loans receivable:          
Total Loans and leases receivable $ 0 $ 0 $ 0 $ 0