XML 52 R42.htm IDEA: XBRL DOCUMENT
v3.23.2

SECURITIES - Available-for-sale Securities With Unrealized Loss Positions (Details) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | $ 56,574,000 | $ 297,304,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (2,167,000) | (28,730,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 385,178,000 | 184,052,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (59,515,000) | (35,352,000)
Available-for-sale securities with unrealized loss positions, fair value | 441,752,000 | 481,356,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (61,682,000) | (64,082,000)
Obligations of the U.S. Treasury |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 0 | 20,192,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | 0 | (1,939,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 30,743,000 | 11,644,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (3,188,000) | (1,391,000)
Available-for-sale securities with unrealized loss positions, fair value | 30,743,000 | 31,836,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (3,188,000) | (3,330,000)
Obligations of U.S. Government agencies |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 6,315,000 | 8,509,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (334,000) | (430,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 14,237,000 | 12,921,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (2,013,000) | (2,078,000)
Available-for-sale securities with unrealized loss positions, fair value | 20,552,000 | 21,430,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (2,347,000) | (2,508,000)
Bank holding company debt securities |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 0 | 14,248,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | 0 | (1,697,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 23,325,000 | 11,138,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (5,623,000) | (1,862,000)
Available-for-sale securities with unrealized loss positions, fair value | 23,325,000 | 25,386,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (5,623,000) | (3,559,000)
Obligations Of States And Political Subdivisions Tax Exempt |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 11,923,000 | 106,204,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (306,000) | (11,023,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 97,304,000 | 15,153,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (12,016,000) | (2,822,000)
Available-for-sale securities with unrealized loss positions, fair value | 109,227,000 | 121,357,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (12,322,000) | (13,845,000)
Obligations Of States And Political Subdivisions Taxable |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 2,657,000 | 28,901,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (93,000) | (4,739,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 53,045,000 | 27,761,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (9,920,000) | (6,937,000)
Available-for-sale securities with unrealized loss positions, fair value | 55,702,000 | 56,662,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (10,013,000) | (11,676,000)
Residential Passthrough Securities |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 14,150,000 | 45,410,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (667,000) | (4,226,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 78,645,000 | 54,531,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (11,565,000) | (8,615,000)
Available-for-sale securities with unrealized loss positions, fair value | 92,795,000 | 99,941,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (12,232,000) | (12,841,000)
Residential Collateralized Mortgage Obligations |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 2,780,000 | 28,670,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (101,000) | (2,042,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 33,117,000 | 11,626,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (4,446,000) | (2,530,000)
Available-for-sale securities with unrealized loss positions, fair value | 35,897,000 | 40,296,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (4,547,000) | (4,572,000)
Commercial Mortgage Backed Securities |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 10,755,000 | 40,408,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (519,000) | (2,585,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 54,762,000 | 39,278,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | (10,744,000) | (9,117,000)
Available-for-sale securities with unrealized loss positions, fair value | 65,517,000 | 79,686,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | (11,263,000) | (11,702,000)
Private label commercial mortgage-backed securities |  |
Available-for-sale Securities With Unrealized Loss Positions |  |
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value | 7,994,000 | 4,762,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses | (147,000) | (49,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value | 0 | 0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses | 0 | 0
Available-for-sale securities with unrealized loss positions, fair value | 7,994,000 | 4,762,000
Available-for-sale securities, with unrealized loss positions, unrealized losses | $ (147,000) | $ (49,000)

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | cznc_DebtSecuritiesAvailableForSaleUnrealizedLossPositionLineItems
Namespace Prefix: | cznc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-4 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-4 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_U.s.TreasuryDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_BankHoldingCompanyDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_ObligationsOfStatesAndPoliticalSubdivisionsTaxExemptMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_ObligationsOfStatesAndPoliticalSubdivisionsTaxableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_ResidentialPassthroughSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_ResidentialCollateralizedMortgageObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cznc_PrivateLabelCommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |