XML 46 R38.htm IDEA: XBRL DOCUMENT
v3.25.2

Interest-Bearing Deposits (Tables) | 12 Months Ended
--- | ---
Jun. 30, 2025
Federal Home Loan Banks [Abstract] |
Interest Expense by Deposit Type | The following table represents interest expense by deposit type:
|  | 2025 |  |  | 2024 |
Savings, NOW, and Money Market |  | $ | 4,737 |  |  | $ | 5,351 |
Certificates of deposit |  |  | 11,732 |  |  |  | 10,996 |
Brokered certificates of deposit |  |  | 1,396 |  |  |  | 1,306 |
Total deposit interest expense |  | $ | 17,865 |  |  | $ | 17,653 |
Scheduled Maturities of Time Deposits Including Brokered Time Deposits | At June 30, 2025, the scheduled maturities of time deposits; including brokered time deposits, are as follows:
2026 |  | $ | 272,570 |
2027 |  |  | 32,481 |
2028 |  |  | 7,477 |
2029 |  |  | 461 |
2030 and thereafter |  |  | 96 |
|  | $ | 313,085 |

X
- Definition schedule of interest expense by deposit type. + References No definition available. + Details
Name: | iroq_ScheduleOfInterestExpenseByDepositTypeTableTextBlock
Namespace Prefix: | iroq_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maturities of time deposits. + References No definition available. + Details
Name: | iroq_ScheduleOfMaturitiesOfTimeDepositsTableTextBlock
Namespace Prefix: | iroq_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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