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| Seq | Description | Type | Size | |
|---|---|---|---|---|
| 1 | 8-K | 8-K | 22.4 KB | Open in viewerDownload |
| 2 | EX-99.1 | EX-99.1 | 668.0 KB | Open in viewerDownload |
| 3 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | EX-101.SCH | 2.1 KB | Download |
| 4 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | EX-101.DEF | 16.5 KB | Download |
| 5 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | EX-101.LAB | 28.4 KB | Download |
| 6 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | EX-101.PRE | 16.8 KB | Download |
| 7 | chco-20260423_g1.jpg | GRAPHIC | 28.1 KB | Open in viewerDownload |
| 9 | IDEA: XBRL DOCUMENT | HTML | 37.3 KB | Open in viewerDownload |
| 10 | IDEA: XBRL DOCUMENT | CSS | 2.6 KB | Download |
| 11 | IDEA: XBRL DOCUMENT | JS | 0.9 KB | Download |
| 13 | IDEA: XBRL DOCUMENT | XML | 1.8 KB | Download |
| 15 | IDEA: XBRL DOCUMENT | JSON | 22.6 KB | Download |
| 16 | IDEA: XBRL DOCUMENT | ZIP | 65.1 KB | Download |
| 17 | IDEA: XBRL DOCUMENT | XML | 2.6 KB | Download |
| 999 | Full raw SEC SGML submission | Full Submission Text | 953.3 KB | Open in viewerDownload |
