Equity Earnings of Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 30, 2018	Dec. 31, 2017
Summarized statements of operations
Equity (loss) earnings of joint ventures	$ 1,476	$ 1,473	$ 2,385	$ 2,499
VAST LLC
Summarized statements of operations
Net Sales	47,719	45,333	87,775	83,843
Cost of Goods Sold	37,768	35,263	68,870	64,276
Gross Profit (Loss)	9,951	10,070	18,905	19,567
Engineering, Selling and Administrative Expense	6,719	6,325	12,869	12,346
Income (Loss) From Operations	3,232	3,745	6,036	7,221
Other Income (Expense), net	1,907	636	2,304	786
Income before Provision for Income Taxes	5,139	4,381	8,340	8,007
Provision for Income Taxes	658	162	1,125	684
Net Income (Loss)	4,481	4,219	7,215	7,323
STRATTEC’s Share of VAST LLC Net Income	1,494	1,406	2,405	2,441
Intercompany Profit Elimination	(7)	(2)	(3)	(2)
Equity (loss) earnings of joint ventures	$ 1,487	$ 1,404	$ 2,402	$ 2,439