XML 136 R104.htm IDEA: XBRL DOCUMENT
v3.25.0.1

EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Profit Sharing and Deferred Compensation Plans (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) age shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) shares
Defined Contribution Plan Disclosure [Line Items] |  |  |
Matching contributions | $ 1,468,000 | $ 1,419,000 | $ 1,415,000
Employee Stock Ownership Plan (ESOP), Diversification Feature, Age Requirement | age | 55 |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period | 10 years |  |
Employee Stock Ownership Plan (ESOP), Diversification Feature Percentage | 50.00% |  |
Employee Stock Ownership Plan (ESOP), Policy Diversification Feature Term | 6 years |  |
Employee Stock Ownership Plan (ESOP), Shares Repurchased | shares |  | 0 | 0
Employee Stock Ownership Plan (ESOP), Shares in ESOP, Total | shares | 618,148 | 579,567 | 564,353
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP | $ 665,000 | $ 1,244,000 | $ 1,170,000
Deferred Compensation, Monthly Payments To Be Made To Executives Or His Heirs | $ 1,000,000 |  |
Deferred Compensation Arrangement with Individual, Maximum Contractual Term | 10 years |  |
Nonqualified supplemental deferred compensation arrangement |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense | $ 223,000 | 489,000 | 391,000
Nonqualified supplemental deferred compensation arrangement | Accrued interest and other liabilities |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Deferred compensation arrangement liability | $ 3,164,000 | 3,025,000 |
Supplemental retirement benefit to a former executive In connection with an acquisition |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Deferred Compensation Liability Discount Rate | 1.50% |  |
Supplemental retirement benefit to a former executive In connection with an acquisition | Accrued interest and other liabilities |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Supplemental retirement benefit liability | $ 919,000 | 905,000 |
Supplemental retirement benefit to a former executive In connection with an acquisition | Pension And Other Employee Benefits Expenses |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense | $ 14,000 | $ 13,000 | $ 14,000

X
- Definition Represents the discount rate used to measure the deferred compensation liability. + References No definition available. + Details
Name: | cznc_DeferredCompensationLiabilityDiscountRate
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of monthly deferred compensation payable to the executives or his heirs under the arrangement. + References No definition available. + Details
Name: | cznc_DeferredCompensationMonthlyPaymentsToBeMadeToExecutivesOrHisHeirs
Namespace Prefix: | cznc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The age a participant in an Employee Stock Ownership Plan must be in order to be eligible for the plans diversification feature. + References No definition available. + Details
Name: | cznc_EmployeeStockOwnershipPlanESOPDiversificationFeatureAgeRequirement
Namespace Prefix: | cznc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum amount of Corporation shares that a participant in an Employee Stock Ownership Plan is allowed to sell back in a predetermined amount of time once qualifications for the plans diversification feature have been met. + References No definition available. + Details
Name: | cznc_EmployeeStockOwnershipPlanESOPDiversificationFeaturePercentage
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The period of time that a participant in an Employee Stock Ownership Plan has to sell back Corporation shares once qualifications for the plans diversification feature have been met. + References No definition available. + Details
Name: | cznc_EmployeeStockOwnershipPlanESOPPolicyDiversificationFeatureTerm
Namespace Prefix: | cznc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares repurchased from employee stock ownership plans (ESOP). + References No definition available. + Details
Name: | cznc_EmployeeStockOwnershipPlanESOPSharesRepurchased
Namespace Prefix: | cznc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 710 -SubTopic 10 -Name Accounting Standards Codification -Section 30 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483043/710-10-30-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-1 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482943/710-10-55-7 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualMaximumContractualTerm1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482943/710-10-55-7 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualRequisiteServicePeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480489/718-40-50-1 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPCashContributionsToESOP
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480489/718-40-50-1 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480535/715-20-45-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=cznc_AcquiredSupplementalRetirementBenefitToFormerExecutiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=cznc_PensionAndOtherEmployeeBenefitsExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |