Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000763563-23-000051-index-headers.html | 2023-04-27 08:09:03 | |
| 0000763563-23-000051-index.html | 2023-04-27 08:09:03 | |
| 0000763563-23-000051.txt | 2023-04-27 08:09:03 | |
 0000763563-23-000051-xbrl.zip | 763083 | 2023-04-27 08:09:03 |
| chmg-20230425.htm | 759537 | 2023-04-27 08:09:03 |
| chmg-20230425.xsd | 3865 | 2023-04-27 08:09:03 |
| chmg-20230425_def.xml | 5304 | 2023-04-27 08:09:03 |
 chmg-20230425_g1.jpg | 167274 | 2023-04-27 08:09:03 |
 chmg-20230425_g10.jpg | 8736 | 2023-04-27 08:09:03 |
 chmg-20230425_g11.jpg | 7693 | 2023-04-27 08:09:03 |
 chmg-20230425_g12.jpg | 7510 | 2023-04-27 08:09:03 |
 chmg-20230425_g13.jpg | 7984 | 2023-04-27 08:09:03 |
 chmg-20230425_g14.jpg | 6911 | 2023-04-27 08:09:03 |
 chmg-20230425_g15.jpg | 7575 | 2023-04-27 08:09:03 |
 chmg-20230425_g16.jpg | 7886 | 2023-04-27 08:09:03 |
 chmg-20230425_g17.jpg | 8970 | 2023-04-27 08:09:03 |
 chmg-20230425_g18.jpg | 9138 | 2023-04-27 08:09:03 |
 chmg-20230425_g19.jpg | 7301 | 2023-04-27 08:09:03 |
 chmg-20230425_g2.jpg | 9070 | 2023-04-27 08:09:03 |
 chmg-20230425_g20.jpg | 8362 | 2023-04-27 08:09:03 |
 chmg-20230425_g21.jpg | 7078 | 2023-04-27 08:09:03 |
 chmg-20230425_g22.jpg | 7115 | 2023-04-27 08:09:03 |
 chmg-20230425_g23.jpg | 9133 | 2023-04-27 08:09:03 |
 chmg-20230425_g24.jpg | 7897 | 2023-04-27 08:09:03 |
 chmg-20230425_g25.jpg | 103647 | 2023-04-27 08:09:03 |
 chmg-20230425_g26.jpg | 102396 | 2023-04-27 08:09:03 |
 chmg-20230425_g27.jpg | 227485 | 2023-04-27 08:09:03 |
 chmg-20230425_g28.jpg | 98831 | 2023-04-27 08:09:03 |
 chmg-20230425_g3.jpg | 9288 | 2023-04-27 08:09:03 |
 chmg-20230425_g4.jpg | 8256 | 2023-04-27 08:09:03 |
 chmg-20230425_g5.jpg | 6909 | 2023-04-27 08:09:03 |
 chmg-20230425_g6.jpg | 7950 | 2023-04-27 08:09:03 |
 chmg-20230425_g7.jpg | 7073 | 2023-04-27 08:09:03 |
 chmg-20230425_g8.jpg | 8884 | 2023-04-27 08:09:03 |
 chmg-20230425_g9.jpg | 7774 | 2023-04-27 08:09:03 |
| chmg-20230425_htm.xml | 87575 | 2023-04-27 08:09:03 |
| chmg-20230425_lab.xml | 7577 | 2023-04-27 08:09:03 |
| chmg-20230425_pre.xml | 4271 | 2023-04-27 08:09:03 |
| FilingSummary.xml | 3403 | 2023-04-27 08:09:03 |
| Financial_Report.xlsx | 8240 | 2023-04-27 08:09:03 |
| MetaLinks.json | 148069 | 2023-04-27 08:09:03 |
| R1.htm | 10845 | 2023-04-27 08:09:03 |
| R2.htm | 95571 | 2023-04-27 08:09:03 |
| report.css | 2767 | 2023-04-27 08:09:03 |
| Show.js | 1085 | 2023-04-27 08:09:03 |