| Deposits - Summary of Interest Expense on Deposits (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Interest Expense, Deposits [Abstract] | |||
| Demand: interest-bearing | $ 119 | $ 117 | $ 100 | 
| Money market and savings | 68,304 | 44,066 | 12,753 | 
| Time deposits more than $250,000 | 48,779 | 42,762 | 4,457 | 
| Other time deposits | 65,490 | 47,763 | 8,628 | 
| Total interest expense on deposits | $ 182,692 | $ 134,708 | $ 25,938 | 
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- Definition Interest expense time deposits 250000 or more. No definition available. 
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- Definition Aggregate amount of interest expense on all deposits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition The aggregate interest expense incurred on the following for deposits in domestic offices: (1) transaction accounts (NOW, and telephone and preauthorized transfer accounts), (2) money market deposits and (3) savings deposits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Interest expense incurred on other deposits in domestic offices. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Interest expense incurred on all savings account deposits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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