Quarterly report pursuant to Section 13 or 15(d)

Loans and Leases - Information on Impaired Loans, Disaggregated by Loan Class (Detail)

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Loans and Leases - Information on Impaired Loans, Disaggregated by Loan Class (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Financing Receivable, Impaired [Line Items]          
Recorded Investment $ 26,939   $ 26,939   $ 27,183
Unpaid Principal Balance 29,797   29,797   29,623
With No Related Allowance Recorded 15,972   15,972   14,225
With an Allowance Recorded 10,967   10,967   12,958
Related Allowance 3,977   3,977   5,878
Average Recorded Investment 28,495 $ 26,344 28,498 $ 25,708  
Interest Income Recognized 382 442 749 819  
Real estate loans [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 18,261   18,261   18,663
Unpaid Principal Balance 20,688   20,688   20,701
With No Related Allowance Recorded 13,394   13,394   11,783
With an Allowance Recorded 4,867   4,867   6,880
Related Allowance 1,540   1,540   2,093
Average Recorded Investment 19,217 19,789 19,576 20,322  
Interest Income Recognized 317 371 620 687  
Real estate loans [Member] | Retail [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 1,715   1,715   1,403
Unpaid Principal Balance 1,747   1,747   1,423
With No Related Allowance Recorded 1,248   1,248   1,246
With an Allowance Recorded 467   467   157
Related Allowance 56   56   1
Average Recorded Investment 1,728 1,500 1,568 1,584  
Interest Income Recognized 26 29 48 61  
Real estate loans [Member] | Hospitality [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 7,313   7,313   6,184
Unpaid Principal Balance 8,973   8,973   7,220
With No Related Allowance Recorded 3,434   3,434   2,144
With an Allowance Recorded 3,879   3,879   4,040
Related Allowance 1,484   1,484   1,677
Average Recorded Investment 7,667 6,074 7,886 6,164  
Interest Income Recognized 131 99 272 167  
Real estate loans [Member] | Other [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 7,106   7,106   8,513
Unpaid Principal Balance 7,709   7,709   9,330
With No Related Allowance Recorded 6,585   6,585   7,569
With an Allowance Recorded 521   521   944
Related Allowance 0   0   394
Average Recorded Investment 7,562 9,392 7,702 9,776  
Interest Income Recognized 133 215 243 398  
Real estate loans [Member] | Residential property [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 2,127   2,127   2,563
Unpaid Principal Balance 2,259   2,259   2,728
With No Related Allowance Recorded 2,127   2,127   824
With an Allowance Recorded 0   0   1,739
Related Allowance 0   0   21
Average Recorded Investment 2,260 2,823 2,420 2,798  
Interest Income Recognized 27 28 57 61  
Commercial and industrial loans [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 3,000   3,000   3,039
Unpaid Principal Balance 3,144   3,144   3,081
With No Related Allowance Recorded 785   785   1,068
With an Allowance Recorded 2,215   2,215   1,971
Related Allowance 578   578   441
Average Recorded Investment 3,063 5,329 2,989 4,611  
Interest Income Recognized 39 68 79 126  
Leases Receivable [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 4,801   4,801   4,452
Unpaid Principal Balance 4,882   4,882   4,626
With No Related Allowance Recorded 1,018   1,018   455
With an Allowance Recorded 3,783   3,783   3,997
Related Allowance 1,859   1,859   3,334
Average Recorded Investment 5,188   4,896    
Interest Income Recognized 12   22    
Consumer loans [Member]          
Financing Receivable, Impaired [Line Items]          
Recorded Investment 877   877   1,029
Unpaid Principal Balance 1,083   1,083   1,215
With No Related Allowance Recorded 775   775   919
With an Allowance Recorded 102   102   110
Related Allowance 0   0   $ 10
Average Recorded Investment 1,027 1,226 1,037 775  
Interest Income Recognized $ 14 $ 3 $ 28 $ 6