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Summary of Significant Accounting Policies - Operations, Segments (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) item subsidiary segment
Nature of Operations |
Number of unconsolidated subsidiaries | subsidiary | 20
Segments |
Number of Operating Segments | segment | 1
Investment in unconsolidated subsidiaries |
Nature of Operations |
Trust preferred securities to be issued | $ | $ 153,500,000
South Carolina |
Nature of Operations |
Number of counties | 28
NORTH CAROLINA |
Nature of Operations |
Number of counties | $ | 9
VIRGINIA |
Nature of Operations |
Number of counties | 4
ALABAMA |
Nature of Operations |
Number of counties | 5
GEORGIA |
Nature of Operations |
Number of counties | 25
FLORIDA |
Nature of Operations |
Number of counties | $ | 32

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- Definition Represents the number of counties in which the entity operates. + References No definition available. + Details
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- Definition Represents the number of unconsolidated subsidiaries of the entity. + References No definition available. + Details
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Balance Type: | na
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- Definition Represents the aggregate amount of the trust preferred securities, which are to be issued by the unconsolidated subsidiaries established for the purpose of issuing trust preferred securities. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
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