| Schedule of Segment Reporting Information, by Segment [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (in thousands) | | Advisory | | Trust | | Total Reportable | | Other | | Consolidated | | Three Months Ended September 30, 2026 | | | | | | | | | | | | Net fee revenues from external sources | | $ | 19,202 | | | $ | 5,567 | | | $ | 24,769 | | | $ | — | | | $ | 24,769 | | | Net intersegment revenues | | 1,912 | | | 36 | | | 1,948 | | | (1,948) | | | — | | | | | | | | | | | | | | Other revenue | | 1,802 | | | — | | | 1,802 | | | — | | | 1,802 | | | Total revenues | | $ | 22,916 | | | $ | 5,603 | | | $ | 28,519 | | | $ | (1,948) | | | $ | 26,571 | | | Interest income | | $ | 97 | | | $ | 91 | | | $ | 188 | | | $ | — | | | $ | 188 | | | Net income (loss) | | $ | 3,468 | | | $ | 873 | | | $ | 4,341 | | | $ | (1,221) | | | $ | 3,120 | | | Segment assets | | $ | 347,664 | | | $ | 48,528 | | | $ | 396,192 | | | $ | (233,421) | | | $ | 162,771 | | | Segment goodwill | | $ | 23,100 | | | $ | 16,401 | | | $ | 39,501 | | | $ | — | | | $ | 39,501 | | | Segment equity-method investments | | $ | 4,318 | | | $ | — | | | $ | 4,318 | | | $ | — | | | $ | 4,318 | | | Expenditures for long-lived assets | | $ | 21 | | | $ | 10 | | | $ | 31 | | | $ | 22 | | | $ | 53 | | | | | | | | | | | | | | Three Months Ended September 30, 2025 | | | | | | | | | | | | Net fee revenues from external sources | | $ | 18,887 | | | $ | 5,416 | | | $ | 24,303 | | | $ | — | | | $ | 24,303 | | | Net intersegment revenues | | 1,567 | | | 37 | | | 1,604 | | | (1,604) | | | — | | | | | | | | | | | | | | Other revenue | | (14) | | | — | | | (14) | | | — | | | (14) | | | Total revenues | | $ | 20,440 | | | $ | 5,453 | | | $ | 25,893 | | | $ | (1,604) | | | $ | 24,289 | | | Interest income | | $ | 148 | | | $ | 128 | | | $ | 276 | | | $ | — | | | $ | 276 | | | Net income (loss) | | $ | 6,230 | | | $ | 893 | | | $ | 7,123 | | | $ | (3,394) | | | $ | 3,729 | | | Segment assets | | $ | 324,684 | | | $ | 46,177 | | | $ | 370,861 | | | $ | (216,815) | | | $ | 154,046 | | | Segment goodwill | | $ | 23,100 | | | $ | 16,401 | | | $ | 39,501 | | | $ | — | | | $ | 39,501 | | | Segment equity-method investments | | $ | 4,263 | | | $ | — | | | $ | 4,263 | | | $ | — | | | $ | 4,263 | | | Expenditures for long-lived assets | | $ | 5 | | | $ | 16 | | | $ | 21 | | | $ | 61 | | | $ | 82 | |
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