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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Provision for Credit Losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Provision for credit losses on:
Loans	$ 57
Unfunded commitments	(7)
Total provision for credit losses	$ 50

X

- Definition

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

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Financing Receivable, Excluding Accrued Interest, Unfunded Commitments

+ References

No definition available.

+ Details

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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