Note 23 - Revenue From Contracts With Customers (Details Textual) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
|
| Trading Activity Charges Reducing Product Sales Commissions and Fees | $ 310,000,000,000 | $ 296,000 | |
| Contract with Customer, Liability | 0 | ||
| Fiduciary and Trust [Member] | |||
| Accrued Fees and Other Revenue Receivable | $ 5,400,000 | $ 5,300,000 | |
| X | ||||||||||
- Definition Represents the amount of trading activity charges during the period, reducing product sales commissions and fees. No definition available.
|
| X | ||||||||||
- Definition For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
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