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Concentrations of Credit Risk (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Aug. 06, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Commercial real estate | Small Business Administration Paycheck Protection Program |  |  |
Concentration Risk [Line Items] |  |  |
Decrease in unsecured loans |  | $ 107.7 |
U.S. Government, its agencies and Government Sponsored Enterprises (GSEs) | Credit concentration risk | U.S. Government And Government-Sponsored Enterprises |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk amount |  | $ 1,535.0 | $ 1,277.0
Concentration risk percentage |  | 87.00% | 85.00%
Non-Government Sponsored Enterprises | Credit concentration risk | U.S. Government And Government-Sponsored Enterprises |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk amount | $ 516.6 |  |
Non-Government Sponsored Enterprises | Credit concentration risk | Non-Government Sponsored Enterprises |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage |  | 1.00% | 2.00%
Loans portfolio | Credit concentration risk |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, threshold for major borrower, percentage |  | 3.00% | 3.00%
Loans on real estate | Credit concentration risk | Residential loans |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage |  | 89.00% | 84.00%

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- Definition Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 + Details
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