NOTE 9 - BUSINESS SEGMENT INFORMATION - Intercompany Eliminations (Details) - Intercompany Eliminations - Commercial Banking - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Segment Reporting Information [Line Items] | ||||
| Equity in net income of subsidiary bank | $ 43,308 | $ 33,797 | $ 83,594 | $ 64,255 |
| Investment in subsidiary bank | 1,400,567 | 1,324,161 | 1,400,567 | 1,324,161 |
| QCBT | ||||
| Segment Reporting Information [Line Items] | ||||
| Equity in net income of subsidiary bank | 11,787 | 8,240 | 21,460 | 16,784 |
| Investment in subsidiary bank | 315,329 | 297,789 | 315,329 | 297,789 |
| CRBT | ||||
| Segment Reporting Information [Line Items] | ||||
| Equity in net income of subsidiary bank | 21,658 | 15,432 | 39,087 | 29,037 |
| Investment in subsidiary bank | 488,857 | 454,519 | 488,857 | 454,519 |
| CSB | ||||
| Segment Reporting Information [Line Items] | ||||
| Equity in net income of subsidiary bank | 5,855 | 5,161 | 11,610 | 9,299 |
| Investment in subsidiary bank | 202,091 | 182,701 | 202,091 | 182,701 |
| GB | ||||
| Segment Reporting Information [Line Items] | ||||
| Equity in net income of subsidiary bank | 4,008 | 4,964 | 11,437 | 9,135 |
| Investment in subsidiary bank | $ 394,290 | $ 389,152 | $ 394,290 | $ 389,152 |