Quarterly report pursuant to Section 13 or 15(d)

Loans and Leases - Allowance for Loan and Lease Losses (Detail)

v3.8.0.1
Loans and Leases - Allowance for Loan and Lease Losses (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Allowance for loan losses:        
Balance at beginning of period     $ 32,429  
Loan and lease loss provision (income) $ 269 $ (1,450) 611 $ (4,490)
Balance at end of period 32,492   32,492  
Non-PCI Loans and Leases [Member]        
Allowance for loan losses:        
Balance at beginning of period 33,038 34,259 31,458 37,494
Charge-offs (2,405) (111) (3,256) (1,410)
Recoveries on loans and leases previously charged off 871 831 2,709 2,079
Loan and lease loss provision (income) 194 (1,540) 787 (4,724)
Balance at end of period 31,698 33,439 31,698 33,439
PCI Loans and Leases [Member]        
Allowance for loan losses:        
Balance at beginning of period 720 5,448 971 5,441
Charge-offs 0 (5) 0 (142)
Loan and lease loss provision (income) 74 90 (177) 234
Balance at end of period 794 5,533 794 5,533
Allowance for loan and lease losses [Member]        
Allowance for loan losses:        
Balance at beginning of period 33,758 39,707 32,429 42,935
Charge-offs (2,405) (116) (3,256) (1,552)
Recoveries on loans and leases previously charged off 871 831 2,709 2,079
Net loan and lease (charge-offs) recoveries (1,534) 715 (547) 527
Loan and lease loss provision (income) 268 (1,450) 610 (4,490)
Balance at end of period 32,492 38,972 32,492 38,972
Allowance for loan and lease losses [Member] | Non-PCI Loans and Leases [Member]        
Allowance for loan losses:        
Balance at beginning of period 33,038 34,259 31,458 37,494
Charge-offs (2,405) (111) (3,256) (1,410)
Recoveries on loans and leases previously charged off 871 831 2,709 2,079
Net loan and lease (charge-offs) recoveries (1,534) 720 (547) 669
Loan and lease loss provision (income) 194 (1,540) 787 (4,724)
Balance at end of period 31,698 33,439 31,698 33,439
Allowance for loan and lease losses [Member] | PCI Loans and Leases [Member]        
Allowance for loan losses:        
Balance at beginning of period 720 5,448 971 5,441
Charge-offs 0 (5) 0 (142)
Recoveries on loans and leases previously charged off 0 0 0 0
Net loan and lease (charge-offs) recoveries 0 (5) 0 (142)
Loan and lease loss provision (income) 74 90 (177) 234
Balance at end of period $ 794 $ 5,533 $ 794 $ 5,533