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Detailed Information about Interest Rate Swaps with Cash Flows Hedges (Detail) - Interest Rate Swap [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Notional amounts | $ 800,000 | $ 0
Cash Collateral Posted | $ 1,185 |
Weighted average pay rates | 1.62% |
Weighted average receive rates | 1.90% |
Weighted average maturity | 2 years 6 months |

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