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LEASES - Narrative (Details)	Sep. 30, 2023 lease
Lessee, Lease, Description [Line Items]
Operating lease renewal term	5 years
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	11 months 1 day
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	4 years 9 months
Corporate Offices
Lessee, Lease, Description [Line Items]
Number of properties subject to operating leases (in leases)	1
Bank Branch Offices
Lessee, Lease, Description [Line Items]
Number of properties subject to operating leases (in leases)	4
Former Bank Branch Office
Lessee, Lease, Description [Line Items]
Number of properties subject to operating leases (in leases)	1
ATM Location
Lessee, Lease, Description [Line Items]
Number of properties subject to operating leases (in leases)	1

X

- Definition

Number of Properties Subject to Operating Lease

+ References

No definition available.

+ Details

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Namespace Prefix:	czwi_
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Balance Type:	na
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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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X

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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Balance Type:	na
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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

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- Details

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- Details

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- Details

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