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Fair Value Measurements - Additional Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Realized (gains) losses included in net income, net of premium amortization | $ 0 | $ 0 |
Impaired loans not covered under loss-share agreements | 18,288,000 | 12,939,000 |
Specific reserve included in allowance for loan losses | 192,090,000 | 164,171,000 | $ 176,144,000
Changes in fair value, gain (loss) | (9,854,000) | (10,354,000) | $ 12,057,000
Impaired Loans, Not Covered |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Specific reserve included in allowance for loan losses | $ 3,556,000 | $ 5,011,000 |

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- Definition Amount of gain (loss) recognized in income from asset and liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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