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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Performance Status (Detail) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | $ 7,772,142 | $ 7,575,368
Threshold period past due | 30 days |
Loans receivable, PPP | $ 6,305,056 | 4,561,365
Purchased-credit-impaired loans | 11,700 | 13,400
Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 51,199 | 62,045
30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 7,413 | 21,633
60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 7,755 | 13,812
90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 36,031 | 26,600
Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 7,720,943 | 7,513,323
Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,497,485 | 1,761,301
Multi-family | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 18,359 | 24,324
Multi-family | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 4,193
Multi-family | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 3,355 | 5,224
Multi-family | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 15,004 | 14,907
Multi-family | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,479,126 | 1,736,977
Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 2,360,656 | 2,289,441
Commercial and industrial | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 7,737 | 6,610
Commercial and industrial | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 4 | 2,257
Commercial and industrial | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,318 | 1,274
Commercial and industrial | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 6,415 | 3,079
Commercial and industrial | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 2,352,919 | 2,282,831
Commercial real estate owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 653,649 | 572,338
Commercial real estate owner occupied | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,684 | 4,558
Commercial real estate owner occupied | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 864
Commercial real estate owner occupied | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 1,324
Commercial real estate owner occupied | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,684 | 2,370
Commercial real estate owner occupied | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 651,965 | 567,780
Commercial real estate non-owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,206,646 | 1,196,564
Commercial real estate non-owner occupied | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 12 | 2,416
Commercial real estate non-owner occupied | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 0
Commercial real estate non-owner occupied | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 12 | 60
Commercial real estate non-owner occupied | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 2,356
Commercial real estate non-owner occupied | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,206,634 | 1,194,148
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 179,198 | 140,905
Construction | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 0
Construction | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 0
Construction | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 0
Construction | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 0 | 0
Construction | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 179,198 | 140,905
Residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 266,911 | 317,170
Residential real estate | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 5,764 | 10,323
Residential real estate | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 56 | 6,640
Residential real estate | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 679 | 1,827
Residential real estate | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 5,029 | 1,856
Residential real estate | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 261,147 | 306,847
Manufactured housing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 57,904 | 62,243
Manufactured housing | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 6,795 | 4,142
Manufactured housing | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,387 | 1,518
Manufactured housing | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 237 | 673
Manufactured housing | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 5,171 | 1,951
Manufactured housing | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 51,109 | 58,101
Installment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 1,549,693 | 1,235,406
Installment | Total past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 10,848 | 9,672
Installment | 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 5,966 | 6,161
Installment | 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 2,154 | 3,430
Installment | 90 Days or More Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 2,728 | 81
Installment | Loans and leases not past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | $ 1,538,845 | $ 1,225,734

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