Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) borrower loan
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Specific reserve allocations for TDR's	$ 0.4
Troubled debt restructuring loans	10.4
Acquisition, development and construction
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Loans defaulted under the restructured terms	$ 5.7
Number of loans to defaulted borrowers \| loan	9,000,000
Number of borrower defaulted \| borrower	7,000,000
Acquisition, development and construction \| Commercial Borrower One
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Loans defaulted under the restructured terms	$ 1.9
Acquisition, development and construction \| Commercial Borrower Three
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Loans defaulted under the restructured terms	3.1
Acquisition, development and construction \| Commercial Borrowers Four Through Seven
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Loans defaulted under the restructured terms	0.2
Restructured Equipment Loan \| Commercial Borrower Two
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Loans defaulted under the restructured terms	0.5
Accruing
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Troubled debt restructuring loans	$ 4.7
Accruing \| Troubled Debt Restructured Loans \| Portfolio Risk
Details related to loans identified as Troubled Debt Restructurings (TDRs):
Percentage of total impaired loans	45.00%

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