v3.23.2

Loans and Leases Held for Investment at Amortized Cost, Net of Allowance for Loan and Lease Losses - Schedule of Components of Portfolio Segment by Class of Financing Receivable (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | $ 5,533,349 |  | $ 5,033,154 |  |  |
Allowance for loan and lease losses | (355,163) | $ (348,857) | (327,852) | $ (243,260) | $ (187,985) | $ (144,389)
Loans and leases held for investment, net | 5,178,186 |  | 4,705,302 |  |  |
Loans pledged as collateral under the FRB discount window | $ 4,800,000 |  | $ 283,600 |  |  |
Allowance Ratios | 6.40% |  | 6.50% |  |  |
Assets pledged as collateral |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment, net | $ 151,200 |  | $ 156,200 |  |  |
Consumer Portfolio Segment |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | 4,800,958 |  | 4,260,608 |  |  |
Allowance for loan and lease losses | (341,161) | (333,546) | (312,489) | (228,184) | (173,857) | (128,812)
Loans and leases held for investment, net | $ 4,459,797 |  | $ 3,948,119 |  |  |
Allowance Ratios | 7.10% |  | 7.30% |  |  |
Consumer Portfolio Segment | Unsecured personal |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | $ 4,371,330 |  | $ 3,866,373 |  |  |
Consumer Portfolio Segment | Residential mortgages |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | 192,256 |  | 199,601 |  |  |
Consumer Portfolio Segment | Secured consumer |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | 237,372 |  | 194,634 |  |  |
Commercial Portfolio Segment |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | 732,391 |  | 772,546 |  |  |
Allowance for loan and lease losses | (14,002) | $ (15,311) | (15,363) | $ (15,076) | $ (14,128) | $ (15,577)
Loans and leases held for investment, net | $ 718,389 |  | $ 757,183 |  |  |
Allowance Ratios | 1.90% |  | 2.00% |  |  |
Commercial Portfolio Segment | Equipment finance |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | $ 142,073 |  | $ 160,319 |  |  |
Commercial Portfolio Segment | Commercial real estate |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | 382,738 |  | 373,501 |  |  |
Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | 207,580 |  | 238,726 |  |  |
Commercial Portfolio Segment | Commercial and industrial loan, PPP |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Loans and leases held for investment | $ 17,600 |  | $ 67,000 |  |  |

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