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Securities Sold Under Agreements to Repurchase - Summary of Remaining Contractual Maturity of Securities Sold Under Agreements to Repurchase (Detail) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets Sold under Agreements to Repurchase [Line Items] |  |
Total borrowings | $ 137,996 | $ 142,085
Overnight and Continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Total borrowings | 137,996 | 142,085
Mortgage-backed securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Total borrowings | 12,421 | 0
Mortgage-backed securities | Overnight and Continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Total borrowings | 12,421 | 0
Other securities |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Total borrowings | 125,575 | 142,085
Other securities | Overnight and Continuous |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Total borrowings | $ 125,575 | $ 142,085

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