XML 130 R95.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Borrowings - Schedule of Remaining Borrowing Capacity with FHLB (Parenthetical) (Detail) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Interest Rate 1.54% and 0.74% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.54% | 0.74%
Interest Rate 1.54% and 0.74% [Member] | Maximum [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Borrowings | $ 150,000,000 |
Interest Rate 0.83% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 0.83% |
Interest Rate 1.25% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.25% |
Interest Rate 1.05% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.05% |
Interest Rate 1.66% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.66% |
Interest Rate 1.17% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.17% |
Interest Rate 1.35% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.35% |
Interest Rate 1.82% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.82% |
Interest Rate 1.27% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.27% |
Interest Rate 1.97% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.97% |
Interest Rate 1.97% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.97% |
Interest Rate 1.47% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 1.47% |
Interest Rate 2.39% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 2.39% |
Interest Rate 4.72% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 4.72% |
Interest Rate 4.31% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 4.31% |
Interest Rate 3.05% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 3.05% |
Interest Rate 5.24% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 5.24% |
Interest Rate 3.35% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 3.35% |
Interest Rate 4.00% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 4.00% |
Interest Rate 2.96% [Member] |  |
Borrowings Under Repurchase Agreements [Line Items] |  |
Fixed rate on borrowings | 2.96% |

X
- Definition Borrowings Under Repurchase Agreements [Line items] + References No definition available. + Details
Name: | ccne_BorrowingsUnderRepurchaseAgreementsLineItems
Namespace Prefix: | ccne_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Federal home loan bank advances open repo interest rate percentage. + References No definition available. + Details
Name: | ccne_FederalHomeLoanBankAdvancesOpenRepoInterestRatePercentage
Namespace Prefix: | ccne_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Federal home loan bank borrowings. + References No definition available. + Details
Name: | ccne_FederalHomeLoanBankBorrowings
Namespace Prefix: | ccne_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateSevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateElevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateTwelveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateThirteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateFourteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateEighteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateNineteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ccne_InterestRateTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |