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Borrowings - Summary of Bancorps Short Term Borrowings (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
FHLB Advances |  |
Short-term Debt [Line Items] |  |
Maximum outstanding at any month end | $ 0 | $ 850,000
Average balance during the period | $ 127,778 | $ 264,704
Weighted-average interest rate during the period | 0.32% | 2.35%
Federal Funds Purchased |  |
Short-term Debt [Line Items] |  |
Maximum outstanding at any month end | $ 700,000 | $ 365,000
Average balance during the period | $ 88,611 | $ 22,110
Weighted-average interest rate during the period | 0.33% | 0.07%

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