XML 46 R32.htm IDEA: XBRL DOCUMENT v3.23.3

Note 8 - Long-term Debt (Tables)

12 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Amortization of Financing Costs for Debt [Table Text Block]

Fiscal year		In thousands
2024		$	50
2025			50
2026			51
2027			50
2028			23

X

- Definition

Tabular disclosure for a fiscal year schedule of the amortization of financing costs for debt.

+ References

No definition available.

+ Details

Name:	iiin_ScheduleOfAmortizationOfFinancingCostsForDebtTableTextBlock
Namespace Prefix:	iiin_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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