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REGULATORY MATTERS - Payout Restrictions Based on the Capital Conservation Buffer (Details) | Dec. 31, 2022
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Capital Conservation Buffer, Lower Limit | 0.025%
Range One |
Maximum Payout | 60.00%
Capital Conservation Buffer, Lower Limit | 0.025%
Capital Conservation Buffer, Upper Limit | 0.01875%
Range Two |
Maximum Payout | 40.00%
Capital Conservation Buffer, Lower Limit | 0.01875%
Capital Conservation Buffer, Upper Limit | 0.0125%
Range Three |
Maximum Payout | 20.00%
Capital Conservation Buffer, Lower Limit | 0.0125%
Capital Conservation Buffer, Upper Limit | 0.00625%
Range Four |
Maximum Payout | 0.00%
Capital Conservation Buffer, Upper Limit | 0.00625%

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- Definition The lower limit of the capital conservation buffer as a percentage of risk weighted assets. + References No definition available. + Details
Name: | cznc_CapitalConservationBufferLowerLimit
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The upper limit of the capital conservation buffer as a percentage of risk weighted assets. + References No definition available. + Details
Name: | cznc_CapitalConservationBufferUpperLimit
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the maximum payout as a percentage of eligible retained income. + References No definition available. + Details
Name: | cznc_MaximumPayoutAsAPercentageOfEligibleRetainedIncome
Namespace Prefix: | cznc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | cznc_CapitalConservationBufferRangeAxis=cznc_RangeOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | cznc_CapitalConservationBufferRangeAxis=cznc_RangeTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | cznc_CapitalConservationBufferRangeAxis=cznc_RangeThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | cznc_CapitalConservationBufferRangeAxis=cznc_RangeFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |