Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Impact of ASU on Allowance for Credit Losses (Detail)

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Summary of Significant Accounting Policies - Summary of Impact of ASU on Allowance for Credit Losses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses $ 72,557 $ 90,426  
ASU 2016-13      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     $ 78,841
Allowance for credit losses on off-balance sheet items     2,062
ASU 2016-13 | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     61,408
Allowance for credit losses on off-balance sheet items     2,398
ASU 2016-13 | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     17,432
Allowance for credit losses on off-balance sheet items     (335)
Real Estate      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 48,890 51,876  
Real Estate | Retail      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 6,579 4,855  
Real Estate | Hospitality      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 22,670 28,801  
Real Estate | Other      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 15,065 13,991  
Real Estate | Total commercial property loans      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 44,314 47,647  
Real Estate | Construction      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 4,078 2,876  
Real Estate | Residential/Consumer Loans      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 498 1,353  
Real Estate | ASU 2016-13      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     50,463
Real Estate | ASU 2016-13 | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     36,435
Real Estate | ASU 2016-13 | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     14,027
Real Estate | ASU 2016-13 | Retail      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     6,785
Real Estate | ASU 2016-13 | Retail | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     4,911
Real Estate | ASU 2016-13 | Retail | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     1,873
Real Estate | ASU 2016-13 | Hospitality      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     12,387
Real Estate | ASU 2016-13 | Hospitality | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     6,686
Real Estate | ASU 2016-13 | Hospitality | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     5,702
Real Estate | ASU 2016-13 | Other      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     13,415
Real Estate | ASU 2016-13 | Other | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     8,060
Real Estate | ASU 2016-13 | Other | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     5,355
Real Estate | ASU 2016-13 | Total commercial property loans      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     32,587
Real Estate | ASU 2016-13 | Total commercial property loans | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     19,657
Real Estate | ASU 2016-13 | Total commercial property loans | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     12,930
Real Estate | ASU 2016-13 | Construction      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     15,590
Real Estate | ASU 2016-13 | Construction | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     15,003
Real Estate | ASU 2016-13 | Construction | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     587
Real Estate | ASU 2016-13 | Residential/Consumer Loans      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     2,286
Real Estate | ASU 2016-13 | Residential/Consumer Loans | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     1,775
Real Estate | ASU 2016-13 | Residential/Consumer Loans | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     510
Commercial and Industrial      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses 12,418 21,410  
Commercial and Industrial | ASU 2016-13      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     13,709
Commercial and Industrial | ASU 2016-13 | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     16,206
Commercial and Industrial | ASU 2016-13 | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     (2,497)
Commercial and Industrial | ASU 2016-13 | Commercial term      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     12,175
Commercial and Industrial | ASU 2016-13 | Commercial term | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     14,077
Commercial and Industrial | ASU 2016-13 | Commercial term | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     (1,903)
Commercial and Industrial | ASU 2016-13 | Commercial lines of credit      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     1,358
Commercial and Industrial | ASU 2016-13 | Commercial lines of credit | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     1,887
Commercial and Industrial | ASU 2016-13 | Commercial lines of credit | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     (529)
Commercial and Industrial | ASU 2016-13 | International loans      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     176
Commercial and Industrial | ASU 2016-13 | International loans | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     242
Commercial and Industrial | ASU 2016-13 | International loans | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     (65)
Leases Receivable      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses $ 11,249 $ 17,140  
Leases Receivable | ASU 2016-13      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     14,669
Leases Receivable | ASU 2016-13 | Pre-ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     8,767
Leases Receivable | ASU 2016-13 | Impact of ASU 2016-13 Adoption      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Loans receivable, allowance for credit losses     $ 5,902