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Short-term Borrowings - Summary of Short-Term Borrowings (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Short-term Debt [Line Items] |  |  |
Ending Balance | $ 80,139 | $ 597,835 | $ 372,694
Average Balance | $ 444,453 | $ 439,556 | $ 144,834
Average Rate | 4.60% | 4.95% | 1.38%
Federal funds purchased |  |  |
Short-term Debt [Line Items] |  |  |
Ending Balance | $ 0 | $ 0 | $ 0
Average Balance | $ 35 | $ 712 | $ 1,553
Average Rate | 5.71% | 5.62% | 3.93%
Borrowings from FHLB |  |  |
Short-term Debt [Line Items] |  |  |
Ending Balance | $ 55,000 | $ 563,000 | $ 285,000
Average Balance | $ 31,869 | $ 379,712 | $ 41,529
Average Rate | 5.58% | 5.56% | 4.24%
Securities sold under agreements to repurchase |  |  |
Short-term Debt [Line Items] |  |  |
Ending Balance | $ 25,139 | $ 34,835 | $ 87,694
Average Balance | $ 29,418 | $ 59,132 | $ 101,752
Average Rate | 1.25% | 1.01% | 0.18%
Federal Reserve Bank Term Funding Program |  |  |
Short-term Debt [Line Items] |  |  |
Ending Balance | $ 0 | $ 0 | $ 0
Average Balance | $ 383,131 | $ 0 | $ 0
Average Rate | 4.77% | 0.00% | 0.00%
Maximum [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Ending Balance | $ 653,110 | $ 597,835 | $ 372,694
Weighted Average [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Average Rate | 3.71% | 5.37% | 3.56%

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