| Component: (Network and Table) | |
|---|---|
| Network | 068 - Disclosure - Note 11 - Employee Benefit Plans - Plan Asset Mix (Details) (http://www.insteel.com/20161001/role/statement-note-11-employee-benefit-plans-plan-asset-mix-details) |
| Table | Statement [Table] |
| Reporting Entity [Axis] | 0000764401 (http://www.sec.gov/CIK) |
| Scenario [Axis] | Scenario, Unspecified [Domain] |
| Statement [Line Items] | Period [Axis] | |||||
|---|---|---|---|---|---|---|
2014-09-28 - 2015-10-03 | ||||||
| Investment Type [Axis] | ||||||
| Large Cap Equities [Member] | Mid Cap Equities [Member] | Small Cap Equities [Member] | International Equities [Member] | Fixed Income Investments [Member] | Cash and Cash Equivalents [Member] | |
Defined Benefit Plan, Target Plan Asset Allocations | ||||||
Percentage of Plan Assets | ||||||