Equity (Loss) Earnings of Joint Ventures (Details Textual) - USD ($)	12 Months Ended
Jun. 28, 2020	Jun. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Equity (loss) earnings of joint ventures	$ (209,000)	$ 2,783,000
VAST LLC
Schedule Of Equity Method Investments [Line Items]
STRATTEC's percentage ownership in joint venture	33.33%
Equity (loss) earnings of joint ventures	$ (565,000)	2,655,000
SAL LLC
Schedule Of Equity Method Investments [Line Items]
STRATTEC's percentage ownership in joint venture	51.00%
Equity (loss) earnings of joint ventures	$ 356,000	$ 128,000

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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