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Borrowings - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Disclosure [Abstract] |  |  |
Pledged loans receivable, carrying value | $ 2,460,000,000 |  |
Total borrowing capacity available from the collateral | 1,690,000,000 |  |
Remaining available borrowing capacity | 1,300,000,000 |  |
Available for use through the Federal Reserve Bank of San Francisco discount window | 27,600,000 | $ 23,200,000 |
Pledged loans, carrying values | 29,400,000 | 24,800,000 |
Outstanding borrowing capacity | 0 | 0 |
Borrowings | 0 | 0 |
Interest expense on FHLB | $ 6,700,000 | $ 6,900,000 | $ 2,200,000
FHLB, advances, weighted-average interest rate during the year | 4.37% | 3.48% | 1.52%

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- Definition Borrowing. + References No definition available. + Details
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- Definition Borrowing capacity available based on pledged collateral. + References No definition available. + Details
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- Definition Borrowing capacity based on pledged collateral. + References No definition available. + Details
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- Definition Carrying Value Of Loans Pledged As Collateral For FHLB Advances + References No definition available. + Details
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- Definition Amount of interest expense on loans received from Federal Home Loan Bank (FHLB). + References No definition available. + Details
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- Definition Outstanding borrowing capacity. + References No definition available. + Details
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- References No definition available. + Details
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- Definition The calculated weighted average interest rate for Federal Home Loan Bank advances for the period ended as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)(3)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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- Definition Amount of the collateral pledged in support of federal home loan bank advances outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 470 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478878/942-470-45-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477734/942-470-50-3 + Details
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