Annual report pursuant to Section 13 and 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
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]      
Recorded Investment $ 25,125 $ 27,184 $ 26,350
Unpaid Principal Balance 27,761 29,623 27,986
With No Related Allowance Recorded 16,613 14,226 15,019
With an Allowance Recorded 8,512 12,958 11,331
Related Allowance 1,812 5,878 4,327
Average Recorded Investment 29,013 29,590 27,518
Interest Income Recognized 1,674 1,789 2,383
Real estate loans      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 14,761 18,663 21,757
Unpaid Principal Balance 16,925 20,701 23,258
With No Related Allowance Recorded 12,967 11,783 13,303
With an Allowance Recorded 1,794 6,880 8,454
Related Allowance 1 2,093 3,980
Average Recorded Investment 19,196 19,930 21,721
Interest Income Recognized 1,357 1,501 2,033
Real estate loans | Retail      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 2,166 1,403 1,678
Unpaid Principal Balance 2,207 1,423 1,684
With No Related Allowance Recorded 1,894 1,246 151
With an Allowance Recorded 272 157 1,527
Related Allowance 0 1 120
Average Recorded Investment 2,001 1,528 2,243
Interest Income Recognized 183 106 141
Real estate loans | Hospitality      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 4,282 6,184 6,227
Unpaid Principal Balance 5,773 7,220 6,823
With No Related Allowance Recorded 4,032 2,144 2,243
With an Allowance Recorded 250 4,040 3,984
Related Allowance 0 1,677 3,078
Average Recorded Investment 7,285 6,080 4,887
Interest Income Recognized 482 431 454
Real estate loans | Other      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 7,525 8,513 11,054
Unpaid Principal Balance 8,016 9,330 11,900
With No Related Allowance Recorded 6,253 7,569 8,111
With an Allowance Recorded 1,272 944 2,943
Related Allowance 1 394 782
Average Recorded Investment 7,978 9,551 11,935
Interest Income Recognized 601 842 1,326
Real estate loans | Total commercial property loans      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 13,973 16,100 18,959
Unpaid Principal Balance 15,996 17,973 20,407
With No Related Allowance Recorded 12,179 10,959 10,505
With an Allowance Recorded 1,794 5,141 8,454
Related Allowance 1 2,072 3,980
Average Recorded Investment 17,264 17,159 19,065
Interest Income Recognized 1,266 1,379 1,921
Real estate loans | Residential property      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 788 2,563 2,798
Unpaid Principal Balance 929 2,728 2,851
With No Related Allowance Recorded 788 824 2,798
With an Allowance Recorded 0 1,739 0
Related Allowance 0 21 0
Average Recorded Investment 1,932 2,771 2,656
Interest Income Recognized 91 122 112
Commercial and industrial loans      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 4,396 3,040 4,174
Unpaid Principal Balance 4,601 3,081 4,239
With No Related Allowance Recorded 1,644 1,069 1,297
With an Allowance Recorded 2,752 1,971 2,877
Related Allowance 428 441 347
Average Recorded Investment 3,568 4,214 5,175
Interest Income Recognized 211 208 321
Leases receivable      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 5,129 4,452  
Unpaid Principal Balance 5,162 4,626  
With No Related Allowance Recorded 1,256 455  
With an Allowance Recorded 3,873 3,997  
Related Allowance 1,383 3,334  
Average Recorded Investment 5,229 4,464  
Interest Income Recognized 46 47  
Consumer loans      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 839 1,029 419
Unpaid Principal Balance 1,073 1,215 489
With No Related Allowance Recorded 746 919 419
With an Allowance Recorded 93 110 0
Related Allowance 0 10 0
Average Recorded Investment 1,020 982 622
Interest Income Recognized $ 60 $ 33 $ 29