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Derivatives - Summary of Interest Rate Swap Transactions (Detail) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Derivatives Fair Value [Line Items] |  |
Net Exposure, Notional Amount | $ 0 | $ 0
Net Exposure, Fair value | 0 | 0
Derivative Financial Instruments, Assets [Member] | Other Assets [Member] |  |
Derivatives Fair Value [Line Items] |  |
Net Exposure, Notional Amount | $ 151,648,000 | $ 120,131,000
Weighted Average Rate Received/(Paid) | 5.04% | 5.19%
Net Exposure, Fair value | $ 8,918,000 | $ 2,837,000
Derivative Financial Instruments, Liabilities [Member] | Accrued Expenses and Other Liabilities [Member] |  |
Derivatives Fair Value [Line Items] |  |
Net Exposure, Notional Amount | $ (151,648,000) | $ (120,131,000)
Weighted Average Rate Received/(Paid) | 5.04% | 5.19%
Net Exposure, Fair value | $ (8,918,000) | $ (2,837,000)

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