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Securities - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 USD ($) segment | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) segment | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Securities |  |  |  |  |
Debt Securities, Available-for-sale, Realized Gain | $ 0 | $ 5 | $ 5 | $ 268 |
Debt Securities, Available-for-sale, Realized Loss | 0 | 0 | 0 | 157 |
Gross unrealized losses | 199,252 |  | 199,252 |  | $ 10,182
Cumulative OTTI charges | $ 2,974 | $ 2,974 | $ 2,974 | $ 2,974 |
Number of investment securities segregation for impairment evaluation | segment | 2 |  | 2 |  |

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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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- Definition The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL6284393-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL6284393-111563 + Details
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