Sales and Receivable Concentration - Sales to Largest Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jul. 02, 2023
Sales to largest customers
Net sales	$ 537,766	$ 492,946
General Motors Company | Customer Concentration Risk
Sales to largest customers
Net sales	$ 163,097	$ 150,331
General Motors Company | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Percentage of Net Sales	30.00%	30.00%
Ford Motor Company | Customer Concentration Risk
Sales to largest customers
Net sales	$ 114,937	$ 96,593
Ford Motor Company | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Percentage of Net Sales	21.00%	20.00%
Stellantis (Formerly Fiat Chrysler Automobiles) | Customer Concentration Risk
Sales to largest customers
Net sales	$ 77,665	$ 78,061
Stellantis (Formerly Fiat Chrysler Automobiles) | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Percentage of Net Sales	15.00%	16.00%
Total of Major Customers | Customer Concentration Risk
Sales to largest customers
Net sales	$ 355,699	$ 324,985
Total of Major Customers | Customer Concentration Risk | Sales Revenue Net
Sales to largest customers
Percentage of Net Sales	66.00%	66.00%