Derivative and Risk Management Activities - Additional Information (Detail) - USD ($) $ in Millions |
Jun. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Pledged deposits | $ 4.1 | $ 12.0 |
| X | ||||||||||
- Definition Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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