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Sales and Receivable Concentration - Sales to Largest Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 29, 2025	Jun. 30, 2024
Sales to largest customers
Net sales	$ 565,066	$ 537,766
General Motors Company | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Net sales	$ 165,701	$ 163,097
Percentage of Net Sales	29.00%	30.00%
Ford Motor Company | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Net sales	$ 129,193	$ 114,937
Percentage of Net Sales	23.00%	21.00%
Stellantis (Formerly Fiat Chrysler Automobiles) | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Net sales	$ 65,821	$ 77,665
Percentage of Net Sales	12.00%	14.00%
Total of Major Customers | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Net sales	$ 360,715	$ 355,699
Percentage of Net Sales	64.00%	66.00%

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Schedule of Revenue by Major Customers by Reporting Segments.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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