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v3.25.3

LEASES - Additional Information (Details) | Sep. 30, 2025 renewal
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Leases [Abstract] |
Number of renewal options (at least) | 1

X
- Definition Lease, Number Of Renewal Options + References No definition available. + Details
Name: | ccne_LeaseNumberOfRenewalOptions
Namespace Prefix: | ccne_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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