XML 164 R100.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Note 12 - Borrowed Funds and Subordinated Debt - Long-term Borrowing Maturities (Details) (Parentheticals) - Federal Home Loan Bank of Pittsburgh [Member] | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Federal Home Loan Bank Borrowings, Loan Maturing in 2019 with Rate of 2.36% [Member] |  |
Rate |  | 2.36%
Federal Home Loan Bank Borrowings Loan Maturing in 2020 with Rate of 2.73% [Member] |  |
Rate | 2.73% | 2.73%
Federal Home Loan Bank Borrowings Loan Maturing in 2021 with Weighted Average Rate of 1.54% [Member] |  |
Rate | 1.54% |
Federal Home Loan Bank Borrowings Loan Maturing in 2022 with Weighted Average Rate of 2.03% [Member] |  |
Rate | 2.03% |
Federal Home Loan Bank Borrowings Loan Maturing in 2023 with Weighted Average Rate of 1.70% [Member] |  |
Rate | 1.70% |
Federal Home Loan Bank Borrowings Loan Maturing in 2025 with Rate of 4.91% [Member] |  |
Rate | 4.91% | 4.91%

X
- Definition The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis=srt_FederalHomeLoanBankOfPittsburghMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cznc_FederalHomeLoanBankBorrowingsLoanMaturingIn2019WithRateOf236Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cznc_FederalHomeLoanBankBorrowingsLoanMaturingIn2020WithRateOf273Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cznc_FederalHomeLoanBankBorrowingsLoanMaturingIn2021WithWeightedAverageRateOf154Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cznc_FederalHomeLoanBankBorrowingsLoanMaturingIn2022WithWeightedAverageRateOf203Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cznc_FederalHomeLoanBankBorrowingsLoanMaturingIn2023WithWeightedAverageRateOf170Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cznc_FederalHomeLoanBankBorrowingsLoanMaturingIn2025WithRateOf491Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |