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| 0000763563-23-000037-index.html | 2023-03-22 15:09:34 | |
| 0000763563-23-000037.txt | 2023-03-22 15:09:34 | |
 0000763563-23-000037-xbrl.zip | 840050 | 2023-03-22 15:09:34 |
| chmg-20221231.htm | 4488844 | 2023-03-22 15:09:34 |
| chmg-20221231.xsd | 105618 | 2023-03-22 15:09:34 |
| chmg-20221231_cal.xml | 172880 | 2023-03-22 15:09:34 |
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| chmg-20221231_htm.xml | 4547820 | 2023-03-22 15:09:34 |
| chmg-20221231_lab.xml | 1357678 | 2023-03-22 15:09:34 |
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| chmg10k123122exh23.htm | 2432 | 2023-03-22 15:09:34 |
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| FilingSummary.xml | 67389 | 2023-03-22 15:09:34 |
| Financial_Report.xlsx | 215465 | 2023-03-22 15:09:34 |
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| report.css | 2768 | 2023-03-22 15:09:34 |
| Show.js | 1086 | 2023-03-22 15:09:34 |