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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Provision for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
(Negative) provision for credit losses on:
Loans	$ (351)	$ (525)
Unfunded Commitments	101	(275)
Total (negative) provision for credit losses	$ (250)	$ (800)

X

- Definition

Financing Receivable, Excluding Accrued Interest, Allowance For Credit Loss, Expense (Reversal)

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Financing Receivable, Excluding Accrued Interest, Unfunded Commitments

+ References

No definition available.

+ Details

Name:	czwi_FinancingReceivableExcludingAccruedInterestUnfundedCommitments
Namespace Prefix:	czwi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

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