Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Loans and Leases - Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Allowance for loan losses:          
Balance at beginning of period     $ 31,043    
Loan and lease loss provision $ 200 $ 269 949 $ 611  
Balance at end of period 31,676   31,676    
Loans receivable:          
Total Loans and leases receivable 4,582,883   4,582,883   $ 4,304,458
Non-PCI Loans and Leases [Member]          
Allowance for loan losses:          
Balance at beginning of period 31,818 33,758 31,043 32,429  
Charge-offs (1,246) (2,405) (3,535) (3,256)  
Recoveries on loans and leases previously charged off 904 871 3,219 2,709  
Loan and lease loss provision 200 268 949 610  
Balance at end of period 31,676 32,492 31,676 32,492  
Ending balance: individually evaluated for impairment 4,822 6,421 4,822 6,421  
Ending balance: collectively evaluated for impairment 26,854 26,071 26,854 26,071  
Loans receivable:          
Total Loans and leases receivable 4,582,883 4,195,355 4,582,883 4,195,355 $ 4,304,458
Individually evaluated for impairment 30,337 27,499 30,337 27,499  
Collectively evaluated for impairment 4,552,546 4,167,856 4,552,546 4,167,856  
Non-PCI Loans and Leases [Member] | Real estate loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 17,916 23,433 17,012 26,134  
Charge-offs (220) (146) (1,249) (289)  
Recoveries on loans and leases previously charged off 577 343 1,833 1,434  
Loan and lease loss provision (184) (3,293) 493 (6,942)  
Balance at end of period 18,089 20,337 18,089 20,337  
Ending balance: individually evaluated for impairment 2,428 3,882 2,428 3,882  
Ending balance: collectively evaluated for impairment 15,661 16,455 15,661 16,455  
Loans receivable:          
Total Loans and leases receivable 3,792,350 3,539,558 3,792,350 3,539,558  
Individually evaluated for impairment 20,596 19,466 20,596 19,466  
Collectively evaluated for impairment 3,771,754 3,520,092 3,771,754 3,520,092  
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 7,120 7,020 7,400 5,623  
Charge-offs (232) (1,976) (597) (2,017)  
Recoveries on loans and leases previously charged off 237 308 1,170 1,021  
Loan and lease loss provision (38) 1,183 (886) 1,908  
Balance at end of period 7,087 6,535 7,087 6,535  
Ending balance: individually evaluated for impairment 631 531 631 531  
Ending balance: collectively evaluated for impairment 6,456 6,004 6,456 6,004  
Loans receivable:          
Total Loans and leases receivable 396,383 364,456 396,383 364,456  
Individually evaluated for impairment 3,767 3,610 3,767 3,610  
Collectively evaluated for impairment 392,616 360,846 392,616 360,846  
Non-PCI Loans and Leases [Member] | Leases Receivable [Member]          
Allowance for loan losses:          
Balance at beginning of period 6,649 2,033 6,279 307  
Charge-offs (794) (283) (1,689) (950)  
Recoveries on loans and leases previously charged off 90 220 214 239  
Loan and lease loss provision 446 2,867 1,587 5,241  
Balance at end of period 6,391 4,837 6,391 4,837  
Ending balance: individually evaluated for impairment 1,763 2,008 1,763 2,008  
Ending balance: collectively evaluated for impairment 4,628 2,829 4,628 2,829  
Loans receivable:          
Total Loans and leases receivable 379,455 272,271 379,455 272,271  
Individually evaluated for impairment 5,093 3,378 5,093 3,378  
Collectively evaluated for impairment 374,362 268,893 374,362 268,893  
Non-PCI Loans and Leases [Member] | Consumer loans [Member]          
Allowance for loan losses:          
Balance at beginning of period 109 95 122 199  
Charge-offs 0 0 0 0  
Recoveries on loans and leases previously charged off 0 0 2 15  
Loan and lease loss provision 0 (30) (15) (149)  
Balance at end of period 109 65 109 65  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 109 65 109 65  
Loans receivable:          
Total Loans and leases receivable 14,695 19,070 14,695 19,070  
Individually evaluated for impairment 881 1,045 881 1,045  
Collectively evaluated for impairment 13,814 18,025 13,814 18,025  
Non-PCI Loans and Leases [Member] | Unallocated [Member]          
Allowance for loan losses:          
Balance at beginning of period 24 1,177 230 166  
Charge-offs 0 0 0 0  
Recoveries on loans and leases previously charged off 0 0 0 0  
Loan and lease loss provision (24) (459) (230) 552  
Balance at end of period 0 718 0 718  
Ending balance: individually evaluated for impairment 0 0 0 0  
Ending balance: collectively evaluated for impairment 0 718 0 718  
Loans receivable:          
Total Loans and leases receivable 0 0 0 0  
Individually evaluated for impairment 0 0 0 0  
Collectively evaluated for impairment $ 0 $ 0 $ 0 $ 0