XML 57 R41.htm IDEA: XBRL DOCUMENT v3.24.0.1

Other Borrowed Funds (Tables)

12 Months Ended

Dec. 31, 2023

Other Borrowed Funds

Schedule of other borrowed funds

​	​	​	​	​	​	​	​
​	​	December 31,
​	​	2023		​	2022
​	​	(Dollars in Thousands)
Federal Home Loan Bank advances—long-term(1)	​	​	​	​	​	​	​
Balance at year end	​	$	10,745	​	$	10,944	​
Rate on balance outstanding at year end	​		2.61	%		2.61	%
Average daily balance	​	$	10,837	​	$	386,924	​
Average rate	​		2.61	%		1.75	%
Maximum amount outstanding at any month end	​	$	10,928	​	$	436,122	​

(1) Long-term advances at December 31, 2023 and December 31, 2022 consisted of amortizing and non-amortizing advances. The non-amortizing advances totaling $425,000,000 were called by the Federal Home Loan bank in the fourth quarter of 2022. Two amortizing advances are outstanding at December 31, 2023 in the amounts of $2,914,000 and $7,831,000 and mature in December 2033 and November 2033, respectively. The amortization on the amortizing long-term advances totals approximately $204,000, $210,000, $215,000, $221,000 and $227,000 for the years ending December 31, 2024, 2025, 2026, 2027 and December 31, 2028, respectively.

X

- References

No definition available.

+ Details

Name:	iboc_OtherBorrowedFundsDisclosureAbstract
Namespace Prefix:	iboc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of all borrowed funds not defined anywhere else in the taxonomy. Includes Federal Home Loan Bank borrowings, which are short and long-term fixed borrowings.

+ References

No definition available.

+ Details

Name:	iboc_ScheduleOfOtherBorrowedFundsTableTextBlock
Namespace Prefix:	iboc_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration