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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Of Collateral Dependent Loans (Details) $ in Thousands	Sep. 30, 2023 USD ($)
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Amortized Cost	$ 12,007
Allowance	820
Commercial | Commercial real estate - non-owner occupied
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Amortized Cost	9,031
Allowance	664
Commercial | Commercial real estate - owner occupied
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Amortized Cost	1,586
Allowance	61
Commercial | All other commercial loans
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Amortized Cost	1,390
Allowance	$ 95

X

- Definition

Amount of financing receivable on collateral dependent loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	cznc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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

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X

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (g)
-SubTopic 10
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B

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- Details

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- Details

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- Details

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