Equity Earnings of Joint Ventures (Details Textual) - USD ($)	3 Months Ended
Sep. 29, 2019	Sep. 30, 2018
Schedule Of Equity Method Investments [Line Items]
Equity (loss) earnings of joint ventures	$ 484,000	$ 909,000
VAST LLC
Schedule Of Equity Method Investments [Line Items]
STRATTEC's percentage ownership in joint venture	33.33%
Equity (loss) earnings of joint ventures	$ 487,000	915,000
SAL LLC
Schedule Of Equity Method Investments [Line Items]
STRATTEC's percentage ownership in joint venture	51.00%
Equity (loss) earnings of joint ventures	$ (3,000)	$ (6,000)

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

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