XML 82 R72.htm IDEA: XBRL DOCUMENT v3.22.2.2

Repurchase Agreements - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Maximum amount of outstanding agreements	$ 9,244,000	$ 7,142,000
Repurchase agreement monthly average amount	7,277,000	5,421,000
Repurchase agreements	9,244,000	$ 6,245,000
Maturity Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	$ 9,200,000

X

- Definition

Securities sold under repurchase agreements average balance.

+ References

No definition available.

+ Details

Name:	iroq_SecuritiesSoldUnderRepurchaseAgreementsAverageBalance
Namespace Prefix:	iroq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Securities sold under repurchase agreements maximum balance.

+ References

No definition available.

+ Details

Name:	iroq_SecuritiesSoldUnderRepurchaseAgreementsMaximumBalance
Namespace Prefix:	iroq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

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

X

- Definition

Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase where the transferor maintains effective control over the assets, accounting for them as secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729

+ Details

Name:	us-gaap_SecuredDebtRepurchaseAgreements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=us-gaap_MaturityOvernightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: