Earnings (Loss) Per Share - Reconciliation of the Components of Basic and Diluted Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 27, 2021	Jun. 28, 2020
Reconciliation of the components of the basic and diluted per share
Net income (loss) attributable to STRATTEC	$ 22,532	$ (7,605)
Weighted average shares of common stock outstanding	3,788	3,737
Incremental shares – stock based compensation	64
Diluted weighted average shares of common stock outstanding	3,852	3,737
Basic	$ 5.95	$ (2.04)
Diluted	$ 5.85	$ (2.04)