Investment in Joint Ventures And Majority Owned Subsidiaries (Details) - SAL LLC $ in Thousands	12 Months Ended
Jul. 03, 2016 USD ($)
Schedule Of Equity Method Investments [Line Items]
Loss on loan from STRATTEC to SAL LLC	$ 225
Loss on Guarantee of SAL LLC Credit Facility	$ 247

STRATTEC's loss on our joint venture partner's proportionate share, based on its joint venture ownership percentage, of the current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

No definition available.

Name:	strt_LossFromEquityMethodInvestmentOnProportionatePartnerShareLoanGuaranteeWithThirdParty
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration