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Borrowings - Summary of Bancorps Short Term Borrowings (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
FHLB Advances |  |  |
Short-term Debt [Line Items] |  |  |
Maximum outstanding at any month end | $ 775,000 | $ 850,000 | $ 910,000
Average balance during the year | $ 144,918 | $ 264,704 | $ 809,788
Weighted-average interest rate during the year | 1.07% | 2.35% | 2.31%
Federal Funds Purchased |  |  |
Short-term Debt [Line Items] |  |  |
Maximum outstanding at any month end | $ 895,000 | $ 365,000 | $ 842,000
Average balance during the year | $ 349,581 | $ 22,110 | $ 239,481
Weighted-average interest rate during the year | 1.66% | 0.07% | 0.19%

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