Summary of Significant Accounting Policies - Additional Information (Details) |
6 Months Ended |
|---|---|
|
Jun. 30, 2026
Segment
| |
| Accounting Policies [Line Items] | |
| Number of business segment | 1 |
| Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | srt:ChiefExecutiveOfficerMember |
| Segment Reporting, Expense Information Used by CODM, Description | The CODM monitors budgeted to actual results of net income to assess the company's performance, to make decisions on strategic initiatives, and to establish management's compensation. The segment's revenues are primarily derived from retail and commercial banking products and investment income. |
| Coastal States Bank | |
| Accounting Policies [Line Items] | |
| Percentage of ownership minority interest | 100.00% |