Securities - Additional Information (Detail) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Dec. 31, 2020 |
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| Debt Securities, Available-for-sale [Line Items] | |||||
| Proceeds from sales of securities | $ 0 | $ 0 | $ 8,035,000 | $ 495,566,000 | |
| Net gains in earnings resulting from sale of securities | 99,000 | 15,712,000 | |||
| Net unrealized gains recorded in accumulated other comprehensive income | 142,000 | $ 15,300,000 | |||
| Available for sale securities pledged as collateral | $ 26,100,000 | $ 26,100,000 | $ 27,300,000 | ||
| Minimum | U.S. Government and its Agencies | |||||
| Debt Securities, Available-for-sale [Line Items] | |||||
| Holdings of securities as percentage of share holders' equity | 10.00% | 10.00% | |||
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- Definition Holdings of securities as percentage of share holders' equity. No definition available.
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- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after tax and before adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The carrying amount as of the date of the latest financial statement presented of mortgage-related securities classified as available for sale or held for investment which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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