Equity Earnings (Loss) of Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 01, 2017	Dec. 27, 2015	Jan. 01, 2017	Dec. 27, 2015
Summarized statements of operations
Equity Earnings (Loss) of Joint Ventures	$ 229	$ (22)	$ 291	$ (315)
VAST LLC
Summarized statements of operations
Net Sales	34,007	31,402	59,016	57,750
Cost of Goods Sold	27,124	25,497	47,217	47,411
Gross Profit	6,883	5,905	11,799	10,339
Engineering, Selling and Administrative Expenses	5,212	4,491	9,227	8,116
Income (Loss) From Operations	1,671	1,414	2,572	2,223
Other Income (Expense), net	730	(150)	1,171	(462)
Income before Provision for Income Taxes	2,401	1,264	3,743	1,761
Provision for Income Taxes	405	217	577	311
Net Income (Loss)	1,996	1,047	3,166	1,450
STRATTEC’s Share of VAST LLC Net Income	665	349	1,055	483
Intercompany Profit Elimination	(23)	(4)	(22)	(5)
Equity Earnings (Loss) of Joint Ventures	642	345	1,033	478
SAL LLC
Summarized statements of operations
Net Sales	96	65	196	125
Cost of Goods Sold	97	40	184	95
Gross Profit	(1)	25	12	30
Engineering, Selling and Administrative Expenses	369	358	706	604
Income (Loss) From Operations	(370)	(333)	(694)	(574)
Other Income (Expense), net	(35)	(10)	(47)	(18)
Net Income (Loss)	(405)	(343)	(741)	(592)
STRATTEC’s Share of Equity Loss of SAL LLC	(413)	(343)	(741)	(592)
Loss on Loan to SAL LLC				(150)
Loss on SAL LLC Credit Facility Guarantee		(24)		(51)
Equity Earnings (Loss) of Joint Ventures	$ (413)	$ (367)	$ (741)	$ (793)