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| 0000763563-23-000079-index.html | 2023-11-09 12:52:04 | |
| 0000763563-23-000079.txt | 2023-11-09 12:52:04 | |
 0000763563-23-000079-xbrl.zip | 522123 | 2023-11-09 12:52:04 |
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| chmg-20230930_htm.xml | 4494417 | 2023-11-09 12:52:04 |
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