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v3.20.2

Basis of Presentation Narrative (Details) $ in Millions |  | 6 Months Ended
--- | --- | ---
Apr. 16, 2020 USD ($) relationship | Jun. 30, 2020 USD ($) loan
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Deferred loan payment, period |  | 6 months
Deferred loan payment, number of loans | loan |  | 1,463
Deferred loan payment, amount |  | $ 626.0
Deferred loan payment, number of loans, principal and interest | loan |  | 596
Deferred loan payment, amount, principal and interest |  | $ 401.0
Deferred loan payment, amount, number of loans, principal | loan |  | 867
Deferred loan payment, amount, principal |  | $ 225.0
PPP, Amount | $ 226.0 |
PPP, Relationship | relationship | 1,898 |
PPP, Interest Rate | 1.00% |
PPP, Processing Fees | $ 8.8 |

X
- Definition Deferred Loan Payment, Amount + References No definition available. + Details
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Namespace Prefix: | ccne_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred Loan Payment, Amount, Number Of Loans, Principal + References No definition available. + Details
Name: | ccne_DeferredLoanPaymentAmountNumberOfLoansPrincipal
Namespace Prefix: | ccne_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Deferred Loan Payment, Amount, Principal + References No definition available. + Details
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Namespace Prefix: | ccne_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred Loan Payment, Amount, Principal And Interest + References No definition available. + Details
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Namespace Prefix: | ccne_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred Loan Payment, Number Of Loans + References No definition available. + Details
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Namespace Prefix: | ccne_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Deferred Loan Payment, Number Of Loans, Principal And Interest + References No definition available. + Details
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Namespace Prefix: | ccne_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Deferred Loan Payment, Period + References No definition available. + Details
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Namespace Prefix: | ccne_
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Balance Type: | na
Period Type: | duration

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- Definition Paycheck Protection Program, Amount + References No definition available. + Details
Name: | ccne_PaycheckProtectionProgramAmount
Namespace Prefix: | ccne_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Paycheck Protection Program, Interest Rate + References No definition available. + Details
Name: | ccne_PaycheckProtectionProgramInterestRate
Namespace Prefix: | ccne_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Paycheck Protection Program, Processing Fees + References No definition available. + Details
Name: | ccne_PaycheckProtectionProgramProcessingFees
Namespace Prefix: | ccne_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Paycheck Protection Program, Relationship + References No definition available. + Details
Name: | ccne_PaycheckProtectionProgramRelationship
Namespace Prefix: | ccne_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
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Balance Type: | na
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