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LEASES - Narrative (Details)	Mar. 31, 2023 lease
Lessee, Lease, Description [Line Items]
Operating lease renewal term	5 years
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	6 months 29 days
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	5 years 3 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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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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

X

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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- Details

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- Details

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- Details

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- Details

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