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LOANS - Contractual Aging of Nonaccrual Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
LOANS |  |
Nonaccrual loans | $ 22,971 | $ 21,416
Non accrual Loans [Member] |  |
LOANS |  |
Loans current and past due, nonaccrual | 14,009 | 12,999
Nonaccrual loans | 22,971 | 21,416
Non accrual Loans [Member] | Past Due 30-89 Days |  |
LOANS |  |
Loans current and past due, nonaccrual | 1,729 | 2,689
Non accrual Loans [Member] | Past Due 90+ Days |  |
LOANS |  |
Loans current and past due, nonaccrual | $ 7,233 | $ 5,728

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- Definition Recorded investment in financing receivables that are on nonaccrual status and are current or past due less than 30 days. + References No definition available. + Details
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Namespace Prefix: | cznc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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
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- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447 + Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |