Other Financial Data - Schedule of Balance Sheet Information (Details) - USD ($) $ in Thousands	Oct. 01, 2023	Jul. 02, 2023
Receivables, net:
Customer receivables	$ 73,147	$ 79,174
Allowance for uncollectible accounts	(1,132)	(1,362)
Reserves for quality claims	(663)	(682)
Net customer receivables	71,352	77,130
Banker's acceptance notes	6,608	5,870
Other receivables	746	725
Total receivables, net	78,706	83,725
Inventories:
Raw materials	54,538	59,983
Supplies	11,705	11,787
Work in process	7,945	6,633
Finished goods	68,672	78,032
Gross inventories	142,860	156,435
Net realizable value adjustment	(6,768)	(5,625)
Total inventories	136,092	150,810
Other current assets:
Vendor deposits	2,585	3,863
Value-added taxes receivable	2,574	3,398
Prepaid expenses and other	2,592	2,584
Recovery of non-income taxes, net	1,467	1,933
Contract assets	201	549
Total other current assets	9,419	12,327
Property, plant and equipment, net:
Gross property, plant and equipment	901,808	906,739
Less: accumulated depreciation	(683,263)	(682,768)
Less: accumulated amortization – finance leases	(5,911)	(5,450)
Total property, plant and equipment, net	212,634	218,521
Other non-current assets:
Recovery of taxes	5,808	5,957
Grantor trust	2,463	2,496
Investments in unconsolidated affiliates	3,213	2,997
Intangible assets, net	973	1,210
Other	2,176	1,848
Total other non-current assets	14,633	14,508
Other current liabilities:
Payroll and fringe benefits	8,541	6,981
Utilities	2,065	1,634
Deferred revenue	1,346	1,441
Incentive compensation	1,183	298
Property taxes and other	3,308	2,578
Total other current liabilities	16,443	12,932
Other long-term liabilities:
Nonqualified deferred compensation plan obligation	2,469	2,659
Uncertain tax positions	1,871	1,973
Other	450	468
Total other long-term liabilities	4,790	5,100
Land
Property, plant and equipment, net:
Gross property, plant and equipment	2,496	2,512
Land Improvements
Property, plant and equipment, net:
Gross property, plant and equipment	16,445	16,443
Building and Building Improvements
Property, plant and equipment, net:
Gross property, plant and equipment	167,643	167,589
Assets Held Under Finance Leases
Property, plant and equipment, net:
Gross property, plant and equipment	18,030	16,397
Machinery and Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	659,027	656,431
Computers Software And Office Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	25,255	26,654
Transportation Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	10,646	10,710
Asset under Construction
Property, plant and equipment, net:
Gross property, plant and equipment	$ 2,266	$ 10,003