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Loans and Allowance for Credit Losses - Summary of Purchased Credit Deteriorated (PCD) Loans (Details) - USD ($) $ in Thousands |  | 6 Months Ended | 12 Months Ended
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Feb. 22, 2021 | Jun. 30, 2022 | Dec. 31, 2021
Delta Bancshares Company |  |  |
Summary Of Purchased Credit Deteriorated Loans [Line Items] |  |  |
Purchase price of purchase credit deteriorated loans at acquisition |  | $ 18,796 |
Allowance for credit losses at acquisition |  | (863) |
Non-credit discount/(premium) at acquisition |  | (523) |
Fair value of purchased credit deteriorated loans at acquisition |  | $ 17,410 |
LINCO Bancshares, Inc. |  |  |
Summary Of Purchased Credit Deteriorated Loans [Line Items] |  |  |
Purchase price of purchase credit deteriorated loans at acquisition |  |  | $ 64,647
Allowance for credit losses at acquisition | $ (2,000) |  | (2,074)
Non-credit discount/(premium) at acquisition |  |  | (187)
Fair value of purchased credit deteriorated loans at acquisition |  |  | $ 62,386

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- Definition Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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- Definition Amount at par value of financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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- Definition Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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