XML 38 R28.htm IDEA: XBRL DOCUMENT
v3.23.2

Significant Estimates and Concentrations | 12 Months Ended
--- | ---
Jun. 30, 2023
Text Block [Abstract] |
Significant Estimates and Concentrations | Note 19: Significant Estimates and Concentrations Accounting principles generally accepted in the United States of America require disclosure of certain significant estimates and current vulnerabilities due to certain concentrations. Estimates related to the allowance for credit losses are reflected in the footnote regarding loans. Current vulnerabilities due to certain concentrations of credit risk are discussed in the footnote on commitments and credit risk. Postretirement Benefit Obligations The Company has a postretirement health care plan whereby it agrees to provide certain postretirement benefits to eligible employees. The benefit obligation is the actuarial present value of all benefits attributed to service rendered prior to the valuation date based on the projected unit credit cost method. It is reasonably possible that events could occur that would change the estimated amount of this liability materially in the near term. Investments The Company invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the accompanying consolidated balance sheets .

X
- Definition Significant estimates and concentrations. + References No definition available. + Details
Name: | iroq_SignificantEstimatesAndConcentrationsTextBlock
Namespace Prefix: | iroq_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration