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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Unrealized loss on securities, tax expense | $ 10,400,000 | $ (870,000) | $ 721,000 |  |
Retained earnings not provided for provision for income tax | 10,800,000 |  |  |  |
Tax cuts and jobs act of 2017, change in tax rate, income tax expense (benefit) |  |  |  | $ 1,900,000 | $ 3,600,000
Unrecognized tax benefits | 0 | 0 | $ 0 |  |
Accumulated Other Comprehensive (Loss) Gain |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Tax cuts and jobs act of 2017, change in tax rate, income tax expense (benefit) | 550,000 |  |  |  |
Other Comprehensive Income |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Tax cuts and jobs act of 2017, change in tax rate, income tax expense (benefit) | 1,800,000 |  |  |  |
Colonial American Bank |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating loss carryforwards | 3,900,000 | 4,300,000 |  |  |
Operating loss carryforwards, subject to expiration | 330,000 |  |  |  |
Sun Bancorp, Inc. |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating loss carryforwards | 106,100,000 | 129,400,000 |  |  |
Tax credit | 2,300,000 | $ 2,300,000 |  |  |
Sun Bancorp, Inc. | Tax Year 2022 |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating loss carryforwards, limitations on use, amount | 23,300,000 |  |  |  |
Sun Bancorp, Inc. | After Tax Year 2022 |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating loss carryforwards, limitations on use, amount | $ 9,300,000 |  |  |  |

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- Definition Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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