XML 41 R29.htm IDEA: XBRL DOCUMENT
v3.25.2

LEASES (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Leases [Abstract] |
Schedule of Leased Branch Properties | Leased branch properties as of June 30, 2025 and December 31, 2024 classified as operating leases consist of the following (in thousands):
|  | June 30, 2025 |  | December 31, 2024
Operating lease right-of-use assets |  | $ | 5,446 |  |  | $ | 5,648 |
Less: accumulated amortization |  | (387) |  |  | (772) |
Less: lease termination |  | — |  |  | — |
Add: lease modifications |  | 80 |  |  | 570 |
Operating lease right-of-use-assets, net |  | $ | 5,139 |  |  | $ | 5,446 |
Schedule of Undiscounted Cash Flows of the Operating Lease Liabilities | The following is a schedule by year of the undiscounted cash flows of the operating lease liabilities, excluding CAM charges, as of June 30, 2025 (in thousands):
Year |  | Amount
2025 |  | $ | 476 |
2026 |  | 965 |
2027 |  | 977 |
2028 |  | 845 |
2029 |  | 827 |
2030 and thereafter |  | 1,862 |
Total minimum lease payments |  | 5,952 |
Less: amount representing interest |  | (633) |
Present value of net minimum lease payments |  | $ | 5,319 |
Schedule of Leases in Premises and Equipment | The Corporation has included these leases in premises and equipment as of June 30, 2025 and December 31, 2024 as follows (in thousands):
|  | June 30, 2025 |  | December 31, 2024
Buildings |  | $ | 6,507 |  |  | $ | 6,507 |
Less: accumulated depreciation |  | (3,425) |  |  | (3,236) |
Net book value |  | $ | 3,082 |  |  | $ | 3,271 |
Schedule of Future Minimum Financial Lease Payments | The following is a schedule by year of future minimum lease payments under finance leases, together with the present value of net minimum lease payments as of June 30, 2025 (in thousands):
Year |  | Amount
2025 |  | $ | 246 |
2026 |  | 502 |
2027 |  | 505 |
2028 |  | 505 |
2029 |  | 511 |
2030 and thereafter |  | 2,436 |
Total minimum lease payments |  | 4,705 |
Less: amount representing interest |  | (1,089) |
Present value of net minimum lease payments |  | $ | 3,616 |

X
- Definition Assets And Liabilities, Lessee [Table Text Block] + References No definition available. + Details
Name: | chmg_AssetsAndLiabilitiesLesseeTableTextBlock
Namespace Prefix: | chmg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration