Note 1 - Organization and Significant Accounting Policies (Details Textual) $ in Billions |
6 Months Ended | |
|---|---|---|
|
Apr. 01, 2026
USD ($)
|
Jun. 30, 2026 |
|
| Number of Operating Segments | 3 | |
| Number of Reportable Segments | 3 | |
| Redeemable Noncontrolling Interest, Cash Redemption Percent | 50.00% | |
| Redeemable Noncontrolling Interest, Promissory Note Redemption Percent | 50.00% | |
| Computer Equipment [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 3 years | |
| Office Furniture and Equipment [Member] | Minimum [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 8 years | |
| Office Furniture and Equipment [Member] | Maximum [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 20 years | |
| Building and Building Improvements [Member] | ||
| Property, Plant and Equipment, Useful Life (Year) | 30 years | |
| Tom Johnson Investment Management, LLC (TJIM) [Member] | ||
| Assets under Management, Carrying Amount | $ 1.7 | |
| Tom Johnson Investment Management, LLC (TJIM) [Member] | ||
| Business Combination, Purchase Price, Percent of Revenue | 80.00% |