XML 76 R52.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Loans and Allowance for Loan Losses - Non Accruals 1 (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Real estate loans
Total	$ 1,457	$ 1,505
One- to four-family [Member]
Real estate loans
Total	1,437	1,475
Home equity lines of credit [Member]
Real estate loans
Total	18	22
Real Estate Loan [Member]
Real estate loans
Total	1,457	1,503
Commercial [Member]
Real estate loans
Total	$ 2	6
Consumer Loans [Member]
Real estate loans
Total		$ 2

X

- Definition

Financing receivable recorded investment troubled debt restructurings.

+ References

No definition available.

+ Details

Name:	iroq_FinancingReceivableRecordedInvestmentTroubledDebtRestructuringsAbstract
Namespace Prefix:	iroq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

+ Details

Name:	us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=iroq_RealEstateLoansOneToFourFamilyIncludingHomeEquityLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=iroq_RealEstateLoansHomeEquityLinesOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=iroq_ConsumerLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: