XML 130 R79.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Note 8 - Loans - Average Balance of Impaired Loans and Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Average investment in impaired loans | $ 6,756 | $ 9,113
Interest income recognized on impaired loans on a cash basis | 302 | 333
Residential Portfolio Segment [Member] |  |
Average investment in impaired loans | 1,754 | 1,277
Interest income recognized on impaired loans on a cash basis | 103 | 63
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member] |  |
Average investment in impaired loans | 1,440 | 980
Interest income recognized on impaired loans on a cash basis | 87 | 52
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member] |  |
Average investment in impaired loans | 288 | 297
Interest income recognized on impaired loans on a cash basis | 12 | 11
Residential Portfolio Segment [Member] | Home Equity Line of Credit [Member] |  |
Average investment in impaired loans | 26 | 0
Interest income recognized on impaired loans on a cash basis | 4 | 0
Commercial Portfolio Segment [Member] |  |
Average investment in impaired loans | 4,999 | 7,818
Interest income recognized on impaired loans on a cash basis | 199 | 269
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] |  |
Average investment in impaired loans | 1,562 | 4,897
Interest income recognized on impaired loans on a cash basis | 19 | 141
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Average investment in impaired loans | 1,186 | 708
Interest income recognized on impaired loans on a cash basis | 25 | 47
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |
Average investment in impaired loans | 556 | 0
Interest income recognized on impaired loans on a cash basis | 71 | 0
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] |  |
Average investment in impaired loans | 1,276 | 1,357
Interest income recognized on impaired loans on a cash basis | 49 | 35
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member] |  |
Average investment in impaired loans | 0 | 314
Interest income recognized on impaired loans on a cash basis | 0 | 0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |
Average investment in impaired loans | 399 | 542
Interest income recognized on impaired loans on a cash basis | 31 | 46
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member] |  |
Average investment in impaired loans | 20 | 0
Interest income recognized on impaired loans on a cash basis | 4 | 0
Consumer Portfolio Segment [Member] |  |
Average investment in impaired loans | 3 | 18
Interest income recognized on impaired loans on a cash basis | $ 0 | $ 1

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LienCategoryAxis=us-gaap_SeniorLienMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LienCategoryAxis=us-gaap_JuniorLienMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cznc_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cznc_LoansSecuredByFarmlandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cznc_Multifamily5OrMoreResidentialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cznc_AgriculturalLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cznc_OtherCommercialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |