XML 83 R73.htm IDEA: XBRL DOCUMENT
v3.22.2.2

FAIR VALUE MEASUREMENTS AND FAIR VALUES OF FINANCIAL INSTRUMENTS - Level 3 Valuation Techniques Recurring (Details) - Recurring fair value measurements - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Valuation Techniques and the Unobservable Inputs |  |
Fair value | $ 2,649,000 | $ 2,329,000
Valuation Technique, Discounted cash flow |  |
Valuation Techniques and the Unobservable Inputs |  |
Fair value | $ 2,649,000 | $ 2,329,000
Valuation Technique, Discounted cash flow | Servicing rights. |  |
Valuation Techniques and the Unobservable Inputs |  |
Discount rate | 13.00% | 13.00%
Weighted-average PSA | 141.00% | 209.00%
Servicing fees of loan balances | 0.25% | 0.25%
Servicing fees of payments are late | 4.00% | 4.00%
Late fees assessed | 5.00% | 5.00%
Miscellaneous fees per account per month | $ 1.94 | $ 1.94
Monthly servicing cost per account | 6.00 | 6.00
Additional monthly servicing cost per loan on loans more than 30 days delinquent | $ 24.00 | $ 24.00
Servicing costs of loans more than 30 days delinquent | 1.50% | 1.50%
Annual increase in servicing costs | 3.00% | 3.00%

X
- Definition The additional monthly servicing cost per loan for loans that are more than 30 days delinquent. + References No definition available. + Details
Name: | cznc_AdditionalMonthlyServicingCostPerLoanMoreThan30DaysDelinquent
Namespace Prefix: | cznc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Annual increase in servicing costs expressed as a percentage. + References No definition available. + Details
Name: | cznc_AnnualIncreaseInServicingCosts
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Estimated miscellaneous servicing fees collected per account per month. + References No definition available. + Details
Name: | cznc_MiscellaneousFeesPerAccountPerMonth1
Namespace Prefix: | cznc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References No definition available. + Details
Name: | cznc_ModelingPeriodRate
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expense for monthly servicing costs per account per month. + References No definition available. + Details
Name: | cznc_MonthlyServicingCostPerAccountPerMonth1
Namespace Prefix: | cznc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of loans that are more than 30 days delinquent. + References No definition available. + Details
Name: | cznc_PercentOfLoansMoreThan30DaysDelinquent
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Servicing fees associated with payments that are late. + References No definition available. + Details
Name: | cznc_ServicingFeesPercentOfLatePayments
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Servicing fees associated with loan balances. + References No definition available. + Details
Name: | cznc_ServicingFeesPercentOfLoanBalances
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Servicing fees associated with late fees assessed. + References No definition available. + Details
Name: | cznc_ServicingRightsPercentOfLateFeesAssessed
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value. Calculated as weighted-average PSA. + References No definition available. + Details
Name: | cznc_WeightedAveragePSA
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
Name: | us-gaap_ServicingAssetAtFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_ValuationTechniqueDiscountedCashFlowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=cznc_ServicingRightsAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |